[MIPS] Wire up the timerfd_*() o32 system calls

This patch enables the system calls timerfd_create(), timerfd_settime()
and timerfd_gettime() for MIPS architecture.

Please see the following Bugzilla entry for more details:

http://bugzilla.kernel.org/show_bug.cgi?id=10038

This was tested using a Malta 4Kc board in both little-endian and
big-endian modes. The unit test program is available from the URL
above.

Signed-off-by: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>

[Ralf: Added N64, N32 and O32 bits on 64-bit kernels.]
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 f798139..08a9c50 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -663,6 +663,9 @@
 	sys	sys_ni_syscall		0
 	sys	sys_eventfd		1
 	sys	sys_fallocate		6	/* 4320 */
+	sys	sys_timerfd_create	2
+	sys	sys_timerfd_gettime	2
+	sys	sys_timerfd_settime	4
 	.endm
 
 	/* We pre-compute the number of _instruction_ bytes needed to