ANDROID: fs: Export free_fs_struct and set_fs_pwd

allmodconfig builds fail with:

ERROR: "free_fs_struct" undefined!
ERROR: "set_fs_pwd" undefined!

Export the missing symbols.

Change-Id: I4877ead19d7e7f0c93d4c4cad5681364284323aa
Fixes: 0ec03f845799 ("ANDROID: sdcardfs: override umask on mkdir and create")
Signed-off-by: Guenter Roeck <groeck@chromium.org>
diff --git a/fs/fs_struct.c b/fs/fs_struct.c
index 005dcb4..940c683 100644
--- a/fs/fs_struct.c
+++ b/fs/fs_struct.c
@@ -44,6 +44,7 @@
 	if (old_pwd.dentry)
 		path_put(&old_pwd);
 }
+EXPORT_SYMBOL(set_fs_pwd);
 
 static inline int replace_path(struct path *p, const struct path *old, const struct path *new)
 {
@@ -89,6 +90,7 @@
 	path_put(&fs->pwd);
 	kmem_cache_free(fs_cachep, fs);
 }
+EXPORT_SYMBOL(free_fs_struct);
 
 void exit_fs(struct task_struct *tsk)
 {