include/uapi/asm-generic/fcntl.h insert a padding macro at
the end of the structures flock and flock64.

This macro is defined to "short __unused;" on sparc,
and "long pad[4]" on mips.
Signed-off-by: NLaurent Vivier <laurent@vivier.eu>
Reviewed-by: NMax Filippov <jcmvbkbc@gmail.com>
Message-Id: <20180509231123.20864-3-laurent@vivier.eu>