drm/amdgpu: add Green_Sardine APU flag

Will be used for Green_Sardine which is a new APU.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2020-05-15 16:32:36 -04:00
commit d205c3cc1a