avc_add_callback now only called from initcalls, so replace the
weak GFP_ATOMIC to GFP_KERNEL, and mark this function __init
to make a warning when not been called from initcalls.
Signed-off-by: NWanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: NEric Paris <eparis@redhat.com>