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/vmt.c b/drivers/mtd/ubi/vmt.c
index 863835f..906f972 100644
--- a/drivers/mtd/ubi/vmt.c
+++ b/drivers/mtd/ubi/vmt.c
@@ -855,7 +855,7 @@
 fail:
 	ubi_err("paranoid check failed for volume %d", vol_id);
 	if (vol)
-		ubi_dbg_dump_vol_info(vol);
+		ubi_dump_vol_info(vol);
 	ubi_dbg_dump_vtbl_record(&ubi->vtbl[vol_id], vol_id);
 	dump_stack();
 	spin_unlock(&ubi->volumes_lock);