[MIPS] Wire up utimensat, signalfd, timerfd, eventfd

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

arch/mips/kernel/scall32-o32.S

@@ -657,7 +657,11 @@ einval:	li	v0, -EINVAL
 	sys	sys_getcpu		3
 	sys	sys_epoll_pwait		6
 	sys	sys_ioprio_set		3
-	sys	sys_ioprio_get		2
+	sys	sys_ioprio_get		2	/* 4315 */
+	sys	sys_utimensat		4
+	sys	sys_signalfd		3
+	sys	sys_timerfd		4
+	sys	sys_eventfd		1
 	.endm
 
 	/* We pre-compute the number of _instruction_ bytes needed to