radv: Mark GTT memory as device local for APUs.

Otherwise a lot of games complain about not having enough memory,
and it is sort of local so this seems reasonable to me.

CC: 18.0 <mesa-stable@lists.freedesktop.org>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
(cherry picked from commit e1df849c3cfe0c9da7d2f62fc78be94632949903)
1 file changed