drm/amdgpu/gfx8: use new KIQ packet defines

Rather than open coding them.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Alex Deucher 2017-03-30 12:34:06 -04:00
commit 3d7e30b381