Make initcall_debug a core_param

This is the one I really wanted: now it effects module loading, it
makes sense to be able to flip it after boot.

Signed-off-by: Rusty Russell <[e-mail]>
Acked-by: Arjan van de Ven <[e-mail]>

init/main.c

···
 }
 
 static int initcall_debug;
-
-static int __init initcall_debug_setup(char *str)
-{
-	initcall_debug = 1;
-	return 1;
-}
-__setup("initcall_debug", initcall_debug_setup);
+core_param(initcall_debug, initcall_debug, bool, 0644);
 
 int do_one_initcall(initcall_t fn)
 {