The standard types unsigned int and unsigned long should be used for
.compat_ioctl.  autofs is the only fs using uing/ulong for this, and these
are even the only uint/ulong in the entire autofs code.

Drop unneeded long cast in return value of autofs_dev_ioctl_compat().
It's already long.

Link: http://lkml.kernel.org/r/150285069709.4670.3884827966280147529.stgit@pluto.themaw.netSigned-off-by: Tomohiro Kusumi <tkusumi@tuxera.com>
Signed-off-by: Ian Kent <raven@themaw.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>