DRI support for Radeon HD4650

[Piotr Meyer <aniou%smutek.pl@localhost>]

I patched src/sys/external/bsd/drm/dist/bsd-core/drm_pciids.h
by data taken from:
http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/8ee81e45d374a6d22bc394908d2c78fc72e584b6

...and looks like my radeon card (chip id 0x9495) starts working
with -current snapshot (from 201107240100Z). Could someone commit 
this change into NetBSD tree, please?

PS. Please cc: to me, I'm not on list.

Regards,
-- 
Piotr 'aniou' Meyer