mips: sigsuspend() is essentially the same as rt_sigsuspend() here

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/arch/mips/kernel/signal.c b/arch/mips/kernel/signal.c
index f221722..95b019d 100644
--- a/arch/mips/kernel/signal.c
+++ b/arch/mips/kernel/signal.c
@@ -247,15 +247,9 @@
  */
 
 #ifdef CONFIG_TRAD_SIGNALS
-asmlinkage int sys_sigsuspend(nabi_no_regargs struct pt_regs regs)
+SYSCALL_DEFINE1(sigsuspend, sigset_t __user *, uset)
 {
-	sigset_t newset;
-	sigset_t __user *uset;
-
-	uset = (sigset_t __user *) regs.regs[4];
-	if (copy_from_user(&newset, uset, sizeof(sigset_t)))
-		return -EFAULT;
-	return sigsuspend(&newset);
+	return sys_rt_sigsuspend(uset, sizeof(sigset_t));
 }
 #endif