minor ANSI prototype sparse fix

Fix function prototype to be ANSI-C compliant, consistent with other
function prototypes, addressing a sparse warning.

Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
diff --git a/kernel/module.c b/kernel/module.c
index d5938a5..523c40b71 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1627,7 +1627,7 @@
 }
 
 /* Iterate through all modules and set each module's text as RW */
-void set_all_modules_text_rw()
+void set_all_modules_text_rw(void)
 {
 	struct module *mod;
 
@@ -1648,7 +1648,7 @@
 }
 
 /* Iterate through all modules and set each module's text as RO */
-void set_all_modules_text_ro()
+void set_all_modules_text_ro(void)
 {
 	struct module *mod;