switch mips to generic rt_sigsuspend(), make it unconditional

mips was the last architecture not using the generic variant.
Both native and compat variants switched to generic, which is
made unconditional 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 058a6c1..144d904 100644
--- a/arch/mips/kernel/scall64-o32.S
+++ b/arch/mips/kernel/scall64-o32.S
@@ -391,7 +391,7 @@
 	PTR	sys_32_rt_sigpending
 	PTR	compat_sys_rt_sigtimedwait
 	PTR	sys_32_rt_sigqueueinfo
-	PTR	sys32_rt_sigsuspend
+	PTR	compat_sys_rt_sigsuspend
 	PTR	sys_32_pread			/* 4200 */
 	PTR	sys_32_pwrite
 	PTR	sys_chown