x86-64, kcmp: The kcmp system call can be common

x86-64, kcmp: The kcmp system call can be common

commit eaf4ce6c5fed6b4c55f7efcd5fc3477435cab5e9 upstream.

We already use the same system call handler for i386 and x86-64, there
is absolutely no reason x32 can't use the same system call, too.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: H.J. Lu <hjl.tools@gmail.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Link: http://lkml.kernel.org/n/tip-vwzk3qbcr3yjyxjg2j38vgy9@git.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>