proper prototype for signals_init()

Add a proper prototype for signals_init() in include/linux/signal.h

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/init/main.c b/init/main.c
index cb81ed1..c691f5f 100644
--- a/init/main.c
+++ b/init/main.c
@@ -57,6 +57,7 @@
 #include <linux/device.h>
 #include <linux/kthread.h>
 #include <linux/sched.h>
+#include <linux/signal.h>
 
 #include <asm/io.h>
 #include <asm/bugs.h>
@@ -83,7 +84,6 @@
 extern void fork_init(unsigned long);
 extern void mca_init(void);
 extern void sbus_init(void);
-extern void signals_init(void);
 extern void pidhash_init(void);
 extern void pidmap_init(void);
 extern void prio_tree_init(void);