use pci_intr_establish_xname() everywhere

branches: 1.19.28; 1.19.30;
make pci_intr_string and eisa_intr_string take a buffer and a length
instead of relying in local static storage.

branches: 1.18.6; 1.18.10;
Use pci_aprint_devinfo(9) instead of pci_devinfo+aprint_{normal,naive}
where it looks straightforward, and pci_aprint_devinfo_fancy in a few
others where drivers want to supply their own device names instead
of the pcidevs generated one. More complicated cases, where names
are composed at runtime, are left alone for now. It certainly makes
sense to simplify the drivers here rather than inventing a catch-all API.
This should serve as as example for new drivers, and also ensure
consistent output in the AB_QUIET ("boot -q") case. Also, it avoids
excessive stack usage where drivers attach child devices because the
buffer for the device name is not kept on the local stack anymore.

branches: 1.17.8; 1.17.12;
Don't pull in the whole uvm(9) API to access only PAGE_SIZE and
some other constants. These are provided by sys/param.h now.

branches: 1.16.20;
Normalize my licenses.

branches: 1.15.2; 1.15.4; 1.15.6;
Split device_t/softc.

use aprint_*_dev and device_xname

branches: 1.13.48;
__unused removal on arguments; approved by core.

- sprinkle __unused on function decls.
- fix a couple of unused bugs
- no more -Wno-unused for i386

branches: 1.11.20; 1.11.22;
merge ktrace-lwp.

branches: 1.10.2;
Rename iha_pci_probe() -> iha_pci_match() because we don't have to
probe PCI devices.

Use ANSI function decls.

pass string length (= boundary info) to pci_devinfo so that we do not run over
the end of memory region

branches: 1.7.6;
Sync with copyright verbiage update of OpenBSD's iha(4).

Add trailing ; to CFATTACH_DECL.

Use CFATTACH_DECL().

Declare all cfattach structures const.

add RCSID

Include uvm/uvm_extern.h for PAGE_SIZE.

branches: 1.1.2; 1.1.4; 1.1.6;
Add a driver for the Initio INIC-940/950 PCI SCSI controllers.
Based on OpenBSD's iha driver, and modified some structures by me.

Tested on arc, i386 and macppc.