module: fix warning of unused function when !CONFIG_PROC_FS

Fix this warning:
kernel/module.c:824: warning: ‘print_unload_info’ defined but not used
print_unload_info() just was used when CONFIG_PROC_FS was defined.
This patch mark print_unload_info() inline to solve the problem.

Signed-off-by: Jianjun Kong <[e-mail]>
Signed-off-by: Rusty Russell <[e-mail]>
CC: Ingo Molnar <[e-mail]>
CC: Américo Wang <[e-mail]>

kernel/module.c

···
 	return ret;
 }
 
-static void print_unload_info(struct seq_file *m, struct module *mod)
+static inline void print_unload_info(struct seq_file *m, struct module *mod)
 {
 	struct module_use *use;
 	int printed_something = 0;
···
 EXPORT_SYMBOL(module_put);
 
 #else /* !CONFIG_MODULE_UNLOAD */
-static void print_unload_info(struct seq_file *m, struct module *mod)
+static inline void print_unload_info(struct seq_file *m, struct module *mod)
 {
 	/* We don't know the usage count, or what modules are using. */
 	seq_printf(m, " - -");