drm/nouveau: fix non-vram notifier blocks

Due to a thinko, these were previously forced to VRAM even if we allocated
them in GART.

This commit fixes that bug, but keeps the previous behaviour of using VRAM
by default until it's been tested properly across more chipsets.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2 files changed