move from files.macppc to files.powerpc

[manu%netbsd.org@localhost (Emmanuel Dreyfus)]

Hi all

What govers the choice of adding a feature in
sys/arch/powerpc/conf/files.powerpc rather than in
sys/arch/macppc/conf/files/macppc ?

Would anyone complain if I move Linux emulation from the latter to the
former? (and on other powerpc ports)

While being there, I could also move other MI features such as scsipi,
usb, ata, ofw, i2o, if their status is not different (I imagine it could
be)

-- 
Emmanuel Dreyfus
manu%netbsd.org@localhost