[MIPS] Wire up ioprio_set and ioprio_get.

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 7c0b393..0c9a9ff 100644
--- a/arch/mips/kernel/scall32-o32.S
+++ b/arch/mips/kernel/scall32-o32.S
@@ -656,6 +656,8 @@
 	sys	sys_kexec_load		4
 	sys	sys_getcpu		3
 	sys	sys_epoll_pwait		6
+	sys	sys_ioprio_set		3
+	sys	sys_ioprio_get		2
 	.endm
 
 	/* We pre-compute the number of _instruction_ bytes needed to