amdkfd: test_kq() can be static

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>

diff --cc drivers/gpu/drm/amd/amdkfd/kfd_kernel_queue.c
Simple merge