Revert "[PATCH] make kernel/signal.c:kill_proc_info() static"

This reverts commit d3228a887cae75ef2b8b1211c31c539bef5a5698.
DeBunk this code.  We need it for compat_sys_rt_sigqueueinfo.

Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
diff --git a/kernel/signal.c b/kernel/signal.c
index 5630255..8a04869 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1137,7 +1137,8 @@
 	return error;
 }
 
-static int kill_proc_info(int sig, struct siginfo *info, pid_t pid)
+int
+kill_proc_info(int sig, struct siginfo *info, pid_t pid)
 {
 	int error;
 	rcu_read_lock();