[PATCH] Make some symbol exports conditional on CONFIG_MMU

A few symbols are only defined when CONFIG_MMU=y, but are exported
(by kernel/ksyms.c) unconditionally.  This patch makes them conditional.

kernel/ksyms.c

@@ -328,7 +328,9 @@ EXPORT_SYMBOL(set_anon_super);
 /* for stackable file systems (lofs, wrapfs, cryptfs, etc.) */
 EXPORT_SYMBOL(default_llseek);
 EXPORT_SYMBOL(dentry_open);
+#ifdef CONFIG_MMU
 EXPORT_SYMBOL(filemap_nopage);
+#endif
 EXPORT_SYMBOL(filemap_fdatawrite);
 EXPORT_SYMBOL(filemap_fdatawait);
 EXPORT_SYMBOL(lock_page);
@@ -524,7 +526,9 @@ EXPORT_SYMBOL(single_open);
 EXPORT_SYMBOL(single_release);
 
 /* Program loader interfaces */
+#ifdef CONFIG_MMU
 EXPORT_SYMBOL(setup_arg_pages);
+#endif
 EXPORT_SYMBOL(copy_strings_kernel);
 EXPORT_SYMBOL(do_execve);
 EXPORT_SYMBOL(flush_old_exec);