UBI: rename _init_scan functions

We have a couple of initialization funcntionsn left which have "_scan" suffic -
rename them:

ubi_eba_init_scan() -> ubi_eba_init()
ubi_wl_init_scan() -> ubi_wl_init()

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
index 72fbae1..c143e61 100644
--- a/drivers/mtd/ubi/wl.c
+++ b/drivers/mtd/ubi/wl.c
@@ -1373,14 +1373,14 @@
 }
 
 /**
- * ubi_wl_init_scan - initialize the WL sub-system using attaching information.
+ * ubi_wl_init - initialize the WL sub-system using attaching information.
  * @ubi: UBI device description object
  * @ai: attaching information
  *
  * This function returns zero in case of success, and a negative error code in
  * case of failure.
  */
-int ubi_wl_init_scan(struct ubi_device *ubi, struct ubi_attach_info *ai)
+int ubi_wl_init(struct ubi_device *ubi, struct ubi_attach_info *ai)
 {
 	int err, i;
 	struct rb_node *rb1, *rb2;