ARM: syscall: wire up sys_migrate_pages.

For NUMA support, the sys_migrate_pages syscall is required by
userspace. This patch allocates #379 for this syscall and plumbs
it in.

Signed-off-by: Steve Capper <steve.capper@arm.com>
[tushar.behera@linaro.org: Change to #380, increase __NR_syscalls]
Signed-off-by: Tushar Behera <tushar.behera@linaro.org>
3 files changed