arch-x86,sim-se: Add clone3 syscall

This also expands the syscall table for x86 to 450.

The clone3 version of the syscall puts the parameters in a struct. This
pulls out the parameters that gem5 uses and updates a couple of other
places with new flags and structs.

Reference:
https://github.com/torvalds/linux/blob/master/arch/x86/entry/syscalls/syscall_64.tbl

This is part of the reason for the failing Nightly tests:
https://jenkins.gem5.org/job/nightly/392/, triggered by updating the
tests to use Ubuntu 22.04

Change-Id: Ia934d54c391c6bd4f655bf65538d85371b6dbfb9
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/64931
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Bobby Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby Bruce <bbruce@ucdavis.edu>
4 files changed