UBI: rename ubi_dbg_dump_vol_info

I am going to remove the "UBI debugging" compilation option and make the
debugging stuff to be always compiled it. This patch is a preparation
which renames 'ubi_dbg_dump_vol_info()' to 'ubi_dump_vol_info()'.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
diff --git a/drivers/mtd/ubi/debug.c b/drivers/mtd/ubi/debug.c
index dce463d..2d3dc26 100644
--- a/drivers/mtd/ubi/debug.c
+++ b/drivers/mtd/ubi/debug.c
@@ -109,10 +109,10 @@
 #ifdef CONFIG_MTD_UBI_DEBUG
 
 /**
- * ubi_dbg_dump_vol_info- dump volume information.
+ * ubi_dump_vol_info - dump volume information.
  * @vol: UBI volume description object
  */
-void ubi_dbg_dump_vol_info(const struct ubi_volume *vol)
+void ubi_dump_vol_info(const struct ubi_volume *vol)
 {
 	printk(KERN_DEBUG "Volume information dump:\n");
 	printk(KERN_DEBUG "\tvol_id          %d\n", vol->vol_id);