drm/amdgpu/nv: add asic func for fetching vbios from rom directly

Needed as a fallback if the vbios can't be fetched by other means.

Reviewed-by: Xiaojie Yuan <xiaojie.yuan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2019-11-13 14:27:54 -05:00
commit 29bc37b410