drm/amdgpu: add gmc cg support for navy_flounder

The athub version used for navy_flounder is v2.1.
Signed-off-by: Jiansong Chen <Jiansong.Chen@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c

@@ -1125,7 +1125,8 @@ static int gmc_v10_0_set_clockgating_state(void *handle,
 	if (r)
 		return r;
 
-	if (adev->asic_type == CHIP_SIENNA_CICHLID)
+	if (adev->asic_type == CHIP_SIENNA_CICHLID ||
+	    adev->asic_type == CHIP_NAVY_FLOUNDER)
 		return athub_v2_1_set_clockgating(adev, state);
 	else
 		return athub_v2_0_set_clockgating(adev, state);
@@ -1137,7 +1138,8 @@ static void gmc_v10_0_get_clockgating_state(void *handle, u32 *flags)
 
 	mmhub_v2_0_get_clockgating(adev, flags);
 
-	if (adev->asic_type == CHIP_SIENNA_CICHLID)
+	if (adev->asic_type == CHIP_SIENNA_CICHLID ||
+	    adev->asic_type == CHIP_NAVY_FLOUNDER)
 		athub_v2_1_get_clockgating(adev, flags);
 	else
 		athub_v2_0_get_clockgating(adev, flags);

drivers/gpu/drm/amd/amdgpu/mmhub_v2_0.c

@@ -482,6 +482,7 @@ int mmhub_v2_0_set_clockgating(struct amdgpu_device *adev,
 	case CHIP_NAVI14:
 	case CHIP_NAVI12:
 	case CHIP_SIENNA_CICHLID:
+	case CHIP_NAVY_FLOUNDER:
 		mmhub_v2_0_update_medium_grain_clock_gating(adev,
 				state == AMD_CG_STATE_GATE);
 		mmhub_v2_0_update_medium_grain_light_sleep(adev,