old sigsuspend variants in kernel/signal.c

conditional on OLD_SIGSUSPEND/OLD_SIGSUSPEND3, depending on which
variety of that fossil is needed.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h
index 75defcd..d2dd2f6 100644
--- a/include/linux/syscalls.h
+++ b/include/linux/syscalls.h
@@ -377,6 +377,14 @@
 asmlinkage long sys_delete_module(const char __user *name_user,
 				unsigned int flags);
 
+#ifdef CONFIG_OLD_SIGSUSPEND
+asmlinkage long sys_sigsuspend(old_sigset_t mask);
+#endif
+
+#ifdef CONFIG_OLD_SIGSUSPEND3
+asmlinkage long sys_sigsuspend(int unused1, int unused2, old_sigset_t mask);
+#endif
+
 #ifndef CONFIG_ODD_RT_SIGACTION
 asmlinkage long sys_rt_sigaction(int,
 				 const struct sigaction __user *,