key: convert use of typedef ctl_table to struct ctl_table

This typedef is unnecessary and should just be removed.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/key.h

@@ -332,7 +332,7 @@ do {									\
 } while (0)
 
 #ifdef CONFIG_SYSCTL
-extern ctl_table key_sysctls[];
+extern struct ctl_table key_sysctls[];
 #endif
 /*
  * the userspace interface