Extern declarations in sysctl.c should be move to their own head file, and
then include them in relavant .c files.

Move inotify_table extern declaration to linux/inotify.h
Signed-off-by: NDave Young <hidave.darkstar@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NEric Paris <eparis@redhat.com>