amdgpu: Add GFX MGCG and MGLS for vangogh

add GFX Medium Grain Light Sleep support for vangogh

add AMD_CG_SUPPORT_GFX_CP_LS and AMD_CG_SUPPORT_GFX_RLC_LS

v2:
  add GFX Medium Grain Clock Gating
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

@@ -943,7 +943,11 @@ static int nv_common_early_init(void *handle)
 
 	case CHIP_VANGOGH:
 		adev->apu_flags |= AMD_APU_IS_VANGOGH;
-		adev->cg_flags = AMD_CG_SUPPORT_GFX_CGCG |
+		adev->cg_flags = AMD_CG_SUPPORT_GFX_MGCG |
+			AMD_CG_SUPPORT_GFX_MGLS |
+			AMD_CG_SUPPORT_GFX_CP_LS |
+			AMD_CG_SUPPORT_GFX_RLC_LS |
+			AMD_CG_SUPPORT_GFX_CGCG |
 			AMD_CG_SUPPORT_GFX_CGLS |
 			AMD_CG_SUPPORT_GFX_3D_CGCG |
 			AMD_CG_SUPPORT_GFX_3D_CGLS |