drm/amdgpu/gfx8: set TC_WB_ACTION_EN in RELEASE_MEM packet

This is the recommended setting from the hw team for newer
versions of the firmware.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Alex Deucher 2015-10-15 18:20:45 -04:00
commit a3d5aaa836