MIPS: compat: Return same error ENOSYS as native for invalid operation.

The pains for multiplexed syscalls.

Noticed by Al Viro <viro@zeniv.linux.org.uk>.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 8eeee1c..db9655f 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -171,7 +171,7 @@
 		err = compat_sys_shmctl(first, second, compat_ptr(ptr));
 		break;
 	default:
-		err = -EINVAL;
+		err = -ENOSYS;
 		break;
 	}