MIPS: Add numa api support

Enable sys_mbind()/sys_get_mempolicy()/sys_set_mempolicy() for O32, N32,
and N64 ABIs. By the way, O32/N32 should use the compat version of
sys_migrate_pages()/sys_move_pages(), so fix that.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/7186/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/scall32-o32.S b/arch/mips/kernel/scall32-o32.S
index 3245474..6bfdc82 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -495,8 +495,8 @@
 	PTR	sys_tgkill
 	PTR	sys_utimes
 	PTR	sys_mbind
-	PTR	sys_ni_syscall			/* sys_get_mempolicy */
-	PTR	sys_ni_syscall			/* 4270 sys_set_mempolicy */
+	PTR	sys_get_mempolicy
+	PTR	sys_set_mempolicy		/* 4270 */
 	PTR	sys_mq_open
 	PTR	sys_mq_unlink
 	PTR	sys_mq_timedsend