Make mips/mips64 syscall stubs more like the other architectures.

Change-Id: I55f8c1a95f643a6e484f12fbcc25e2c77e55b6b8

libc/arch-mips64/syscalls/sched_setscheduler.S

@@ -1,14 +1,8 @@
 /* Generated by gensyscalls.py. Do not edit. */
 
-#include <asm/unistd.h>
-#include <machine/asm.h>
-#include <machine/regdef.h>
-    .text
-    .globl sched_setscheduler
-    .align 4
-    .ent sched_setscheduler
+#include <private/bionic_asm.h>
 
-sched_setscheduler:
+ENTRY(sched_setscheduler)
     .set push
     .set noreorder
     li v0, __NR_sched_setscheduler
@@ -28,4 +22,4 @@ sched_setscheduler:
     j t9
     move ra, t0
     .set pop
-    .end sched_setscheduler
+END(sched_setscheduler)