Revert "module: Make module_enable_ro() static again"

This reverts commit e6eff4376e.

It causes a build-breakage on the network test configuration so revert
it for now to hopefully add back after -rc2 is merged.

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I866dcc31dc3d3eb68929708d28935c5e13a7fb3d

include/linux/module.h

@@ -873,6 +873,12 @@ extern int module_sysfs_initialized;
 
 #define __MODULE_STRING(x) __stringify(x)
 
+#ifdef CONFIG_STRICT_MODULE_RWX
+extern void module_enable_ro(const struct module *mod, bool after_init);
+#else
+static inline void module_enable_ro(const struct module *mod, bool after_init) { }
+#endif
+
 #ifdef CONFIG_GENERIC_BUG
 void module_bug_finalize(const Elf_Ehdr *, const Elf_Shdr *,
 			 struct module *);