drm/amdgpu: enable vcn support for green_sardine (v2)

Enable Green_Sardine VCN support and VCN firmware loading

v2: use apu flags

Signed-off-by: Thong Thai <thong.thai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
1 file changed