Make sun3 scsi drivers compile/work again (though with way too many warnings...)

Tested on 3/50, 3/60.
Signed-off-by: NSam Creasey <sammy@sammy.net>
Signed-off-by: NGeert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>