uapi: Use __kernel_ulong_t in struct msqid64_ds

Both x32 and x86-64 use the same struct msqid64_ds for system calls.
But x32 long is 32-bit. This patch replaces unsigned long with
__kernel_ulong_t in struct msqid64_ds.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
Link: http://lkml.kernel.org/r/1388182464-28428-6-git-send-email-hjl.tools@gmail.com


Signed-off-by: H. Peter Anvin <hpa@zytor.com>