support _POSIX_REALTIME_SIGNALS

Bug: 18489947
Change-Id: I2e834d68bc10ca5fc7ebde047b517a3074179475
diff --git a/libc/arch-mips/syscalls/__rt_sigqueueinfo.S b/libc/arch-mips/syscalls/__rt_sigqueueinfo.S
new file mode 100644
index 0000000..a978bc4
--- /dev/null
+++ b/libc/arch-mips/syscalls/__rt_sigqueueinfo.S
@@ -0,0 +1,19 @@
+/* Generated by gensyscalls.py. Do not edit. */
+
+#include <private/bionic_asm.h>
+
+ENTRY(__rt_sigqueueinfo)
+    .set noreorder
+    .cpload t9
+    li v0, __NR_rt_sigqueueinfo
+    syscall
+    bnez a3, 1f
+    move a0, v0
+    j ra
+    nop
+1:
+    la t9,__set_errno_internal
+    j t9
+    nop
+    .set reorder
+END(__rt_sigqueueinfo)