drm/amdgpu: Enable FGCG for Vangogh

Add flags AMD_CG_SUPPORT_GFX_FGCG for Vangogh
Signed-off-by: Jinzhou.Su <Jinzhou.Su@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -953,6 +953,7 @@ static int nv_common_early_init(void *handle)
 			AMD_CG_SUPPORT_GFX_3D_CGLS |
 			AMD_CG_SUPPORT_MC_MGCG |
 			AMD_CG_SUPPORT_MC_LS |
+			AMD_CG_SUPPORT_GFX_FGCG |
 			AMD_CG_SUPPORT_VCN_MGCG |
 			AMD_CG_SUPPORT_JPEG_MGCG;
 		adev->pg_flags = AMD_PG_SUPPORT_GFX_PG |