Switch sigpending over to rt_sigpending.

Change-Id: I7b28984796b5fb343cfbcc47e0afc3a84293d417
diff --git a/libc/arch-mips/syscalls.mk b/libc/arch-mips/syscalls.mk
index 2704200..7d99dad 100644
--- a/libc/arch-mips/syscalls.mk
+++ b/libc/arch-mips/syscalls.mk
@@ -3,10 +3,10 @@
 syscall_src += arch-mips/syscalls/_exit.S
 syscall_src += arch-mips/syscalls/_exit_thread.S
 syscall_src += arch-mips/syscalls/__fork.S
-syscall_src += arch-mips/syscalls/_waitpid.S
-syscall_src += arch-mips/syscalls/__waitid.S
 syscall_src += arch-mips/syscalls/wait4.S
 syscall_src += arch-mips/syscalls/__sys_clone.S
+syscall_src += arch-mips/syscalls/_waitpid.S
+syscall_src += arch-mips/syscalls/__waitid.S
 syscall_src += arch-mips/syscalls/execve.S
 syscall_src += arch-mips/syscalls/getuid.S
 syscall_src += arch-mips/syscalls/getgid.S
@@ -155,8 +155,8 @@
 syscall_src += arch-mips/syscalls/timerfd_settime.S
 syscall_src += arch-mips/syscalls/timerfd_gettime.S
 syscall_src += arch-mips/syscalls/sigaction.S
-syscall_src += arch-mips/syscalls/sigpending.S
 syscall_src += arch-mips/syscalls/__rt_sigaction.S
+syscall_src += arch-mips/syscalls/__rt_sigpending.S
 syscall_src += arch-mips/syscalls/__rt_sigprocmask.S
 syscall_src += arch-mips/syscalls/__rt_sigsuspend.S
 syscall_src += arch-mips/syscalls/__rt_sigtimedwait.S
diff --git a/libc/arch-mips/syscalls/sigpending.S b/libc/arch-mips/syscalls/__rt_sigpending.S
similarity index 66%
rename from libc/arch-mips/syscalls/sigpending.S
rename to libc/arch-mips/syscalls/__rt_sigpending.S
index 45baa4f..bd4a96e 100644
--- a/libc/arch-mips/syscalls/sigpending.S
+++ b/libc/arch-mips/syscalls/__rt_sigpending.S
@@ -1,14 +1,14 @@
 /* autogenerated by gensyscalls.py */
 #include <asm/unistd.h>
     .text
-    .globl sigpending
+    .globl __rt_sigpending
     .align 4
-    .ent sigpending
+    .ent __rt_sigpending
 
-sigpending:
+__rt_sigpending:
     .set noreorder
     .cpload $t9
-    li $v0, __NR_sigpending
+    li $v0, __NR_rt_sigpending
     syscall
     bnez $a3, 1f
     move $a0, $v0
@@ -19,4 +19,4 @@
     j $t9
     nop
     .set reorder
-    .end sigpending
+    .end __rt_sigpending