TODO revision 1.1 
1Things to do for the bktr driver, in no special order:
2
3o check for a possibility to replace remaining vtophys()
4o clean up whitespace before and after braces ("( " -> "(")
5o clean up bt8xx.h
6o replace vm_offset_t (still any left?)
7o not tested on anything but i386 -- alpha/macppc probably will have
8  some issues.
9o use NetBSD's own i2c-functions
10o look for cause of warning (without consequence, as far as I can
11  tell): 
12  bktr0: ioctl: tsleep error 35 200001c
13o split up contents of bktr directory to better places? (also fix
14  bktr2netbsd in that case)
15o use NetBSD PCI listings for recognition of cards.
16o write man page
17o remove #ifdef FreeBSD/OpenBSD code (?)