arch: leverage the x86_64 syscall table in x32
arch: leverage the x86_64 syscall table in x32

Since the Linux Kernel really uses the same syscall table for both
x86_64 and x32 we should do the same and make life easier.

Signed-off-by: Paul Moore <88a1d58bf22a647dce58dd91f9595600dceabba9@redhat.com>

seccomp/libseccomp,amluto/libseccomp,amluto/libseccomp,amluto/libseccomp,seccomp/libseccomp,seccomp/libseccomp