drm/amdgpu: disable runtime pm for sienna_cichlid temporarily

Disable runtime pm for sienna_cichlid temporarily as BACO regression issue.
Signed-off-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -174,6 +174,7 @@ int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags)
 		 (adev->asic_type >= CHIP_TOPAZ) &&
 		 (adev->asic_type != CHIP_VEGA10) &&
 		 (adev->asic_type != CHIP_VEGA20) &&
+		 (adev->asic_type != CHIP_SIENNA_CICHLID) &&
 		 (adev->asic_type != CHIP_ARCTURUS)) /* enable runpm on VI+ */
 		adev->runpm = true;
 	else if (amdgpu_device_supports_baco(dev) &&