mips: don't bother with compat_sys_futex() wrappers

... it's COMPAT_SYSCALL_DEFINE now

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/mips/kernel/scall64-o32.S b/arch/mips/kernel/scall64-o32.S
index aa29c33..78e1ef1 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -430,7 +430,7 @@
 	PTR	sys_fremovexattr		/* 4235 */
 	PTR	sys_tkill
 	PTR	sys_sendfile64
-	PTR	sys_32_futex
+	PTR	compat_sys_futex
 	PTR	compat_sys_sched_setaffinity
 	PTR	compat_sys_sched_getaffinity	/* 4240 */
 	PTR	compat_sys_io_setup