Remove the advertising clause from Marcus Comstedt's dreamcast code.

Thanks to Marcus for agreeing to this. Right now the two files with
shared copyright with thorpej@ are untouched.

Remove unnecessary <sys/malloc.h>.

Merge thorpej-cfargs2.

branches: 1.2.8;
Merge thorpej-cfargs branch:

Simplify and make extensible the config_search() / config_found() /
config_attach() interfaces: rather than having different variants for
which arguments you want pass along, just have a single call that
takes a variadic list of tag-value arguments.

Adjust all call sites:
- Simplify wherever possible; don't pass along arguments that aren't
actually needed.
- Don't be explicit about what interface attribute is attaching if
the device only has one. (More simplification.)
- Add a config_probe() function to be used in indirect configuiration
situations, making is visibly easier to see when indirect config is
in play, and allowing for future change in semantics. (As of now,
this is just a wrapper around config_match(), but that is an
implementation detail.)

Remove unnecessary or redundant interface attributes where they're not
needed.

There are currently 5 "cfargs" defined:
- CFARG_SUBMATCH (submatch function for direct config)
- CFARG_SEARCH (search function for indirect config)
- CFARG_IATTR (interface attribte)
- CFARG_LOCATORS (locators array)
- CFARG_DEVHANDLE (devhandle_t - wraps OFW, ACPI, etc. handles)

...and a sentinel value CFARG_EOL.

Add some extra sanity checking to ensure that interface attributes
aren't ambiguous.

Use CFARG_DEVHANDLE in MI FDT, OFW, and ACPI code, and macppc and shark
ports to associate those device handles with device_t instance. This
will trickle trough to more places over time (need back-end for pre-OFW
Sun OBP; any others?).

branches: 1.1.2; 1.1.6; 1.1.18; 1.1.36;
WIP "G1-ATA" IDE HDD support. Not enabled by default.

Demonstrated on NetBSD booth at Open Source Conference 2016 Tokyo Fall
and Kansai Open Source 2016:
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/09/msg000721.html
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/16/msg000722.html

See my port-dreamcast@ post for more details:
http://mail-index.netbsd.org/port-dreamcast/2016/12/18/msg000295.html

branches: 1.1.2; 1.1.6; 1.1.18;
WIP "G1-ATA" IDE HDD support. Not enabled by default.

Demonstrated on NetBSD booth at Open Source Conference 2016 Tokyo Fall
and Kansai Open Source 2016:
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/09/msg000721.html
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/16/msg000722.html

See my port-dreamcast@ post for more details:
http://mail-index.netbsd.org/port-dreamcast/2016/12/18/msg000295.html

Remove the advertising clause from Marcus Comstedt's dreamcast code.

Thanks to Marcus for agreeing to this. Right now the two files with
shared copyright with thorpej@ are untouched.

branches: 1.1.2; 1.1.6; 1.1.18;
WIP "G1-ATA" IDE HDD support. Not enabled by default.

Demonstrated on NetBSD booth at Open Source Conference 2016 Tokyo Fall
and Kansai Open Source 2016:
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/09/msg000721.html
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/16/msg000722.html

See my port-dreamcast@ post for more details:
http://mail-index.netbsd.org/port-dreamcast/2016/12/18/msg000295.html

Remove the advertising clause from Marcus Comstedt's dreamcast code.

Thanks to Marcus for agreeing to this. Right now the two files with
shared copyright with thorpej@ are untouched.

branches: 1.1.2; 1.1.6; 1.1.18;
WIP "G1-ATA" IDE HDD support. Not enabled by default.

Demonstrated on NetBSD booth at Open Source Conference 2016 Tokyo Fall
and Kansai Open Source 2016:
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/09/msg000721.html
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/16/msg000722.html

See my port-dreamcast@ post for more details:
http://mail-index.netbsd.org/port-dreamcast/2016/12/18/msg000295.html

Remove unnecessary <sys/malloc.h>.

Restore interface to pass a MD reset function to MI wdcprobe().

Fixes silent hang on G1IDE on Dreamcast. PR kern/54538
Should be pulled up to netbsd-9 with the previous changes.

adjust several missed drivers for wdcprobe() changes of ATA NCQ branch

for dreamcast g1 just drop the custom reset function, it doesn't seem to do
anything useful over the generic variant

PR kern/54538 by Izumi Tsutsui

branches: 1.3.2; 1.3.6; 1.3.10;
move ata_queue_alloc(1) and ata_queue_free() calls to ata_channel_init()
and ata_channel_destroy() respectively, to make attachment code simpler,
and to make it easier to spot special queue manipulation like cmdide(4)

on topic of PR kern/52606

adapt the rest of wdc attachments for NCQ branch merge

branches: 1.1.2; 1.1.6;
WIP "G1-ATA" IDE HDD support. Not enabled by default.

Demonstrated on NetBSD booth at Open Source Conference 2016 Tokyo Fall
and Kansai Open Source 2016:
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/09/msg000721.html
http://mail-index.netbsd.org/netbsd-advocacy/2016/11/16/msg000722.html

See my port-dreamcast@ post for more details:
http://mail-index.netbsd.org/port-dreamcast/2016/12/18/msg000295.html