UBIFS: rename dbg_check_dir_size function

Since this function is not only about size checking, rename it to
'dbg_check_dir()'.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
diff --git a/fs/ubifs/debug.h b/fs/ubifs/debug.h
index c6ad9ea..a51c20b 100644
--- a/fs/ubifs/debug.h
+++ b/fs/ubifs/debug.h
@@ -248,7 +248,7 @@
 int dbg_chk_lpt_free_spc(struct ubifs_info *c);
 int dbg_chk_lpt_sz(struct ubifs_info *c, int action, int len);
 int dbg_check_synced_i_size(struct inode *inode);
-int dbg_check_dir_size(struct ubifs_info *c, const struct inode *dir);
+int dbg_check_dir(struct ubifs_info *c, const struct inode *dir);
 int dbg_check_tnc(struct ubifs_info *c, int extra);
 int dbg_check_idx_size(struct ubifs_info *c, long long idx_size);
 int dbg_check_filesystem(struct ubifs_info *c);
@@ -417,7 +417,7 @@
 static inline int dbg_chk_lpt_sz(struct ubifs_info *c,
 				 int action, int len)             { return 0; }
 static inline int dbg_check_synced_i_size(struct inode *inode)    { return 0; }
-static inline int dbg_check_dir_size(struct ubifs_info *c,
+static inline int dbg_check_dir(struct ubifs_info *c,
 				const struct inode *dir)          { return 0; }
 static inline int dbg_check_tnc(struct ubifs_info *c, int extra)  { return 0; }
 static inline int dbg_check_idx_size(struct ubifs_info *c,