amdkfd: Instead of using get function, use container_of

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alexey Skidanov <Alexey.Skidanov@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@amd.com>

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

diff --cc drivers/gpu/drm/amd/amdkfd/kfd_priv.h
Simple merge