drm/amdgpu: disable runtime pm in certain cases

If the platform does not support hybrid graphics or ATPX dGPU
power control.

Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

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

@@ -99,6 +99,8 @@ int amdgpu_driver_load_kms(struct drm_device *dev, unsigned long flags)
 
 	if ((amdgpu_runtime_pm != 0) &&
 	    amdgpu_has_atpx() &&
+	    (amdgpu_is_atpx_hybrid() ||
+	     amdgpu_has_atpx_dgpu_power_cntl()) &&
 	    ((flags & AMD_IS_APU) == 0))
 		flags |= AMD_IS_PX;