drm/amdgpu: enable VCN3.0 PG and CG for dimgrey_cavefish

Enable VCN3.0 PG and CG for dimgrey_cavefish
Signed-off-by: NJames Zhu <James.Zhu@amd.com>
Reviewed-by: NLeo Liu <leo.liu@amd.com>
Reviewed-by: NKenneth Feng <kenneth.feng@amd.com>
Signed-off-by: NAlex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/nv.c

@@ -904,8 +904,9 @@ static int nv_common_early_init(void *handle)
 		adev->external_rev_id = adev->rev_id + 0x01;
 		break;
 	case CHIP_DIMGREY_CAVEFISH:
-		adev->cg_flags = 0;
-		adev->pg_flags = AMD_PG_SUPPORT_VCN_DPG;
+		adev->cg_flags = AMD_CG_SUPPORT_VCN_MGCG;
+		adev->pg_flags = AMD_PG_SUPPORT_VCN |
+			AMD_PG_SUPPORT_VCN_DPG;
 		adev->external_rev_id = adev->rev_id + 0x3c;
 		break;
 	default: