UBI: rename peb_buf1 to peb_buf

Now we have only one buffer so let's rename it to just 'peb_buf1'.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
diff --git a/drivers/mtd/ubi/scan.c b/drivers/mtd/ubi/scan.c
index b99318e..12c43b4 100644
--- a/drivers/mtd/ubi/scan.c
+++ b/drivers/mtd/ubi/scan.c
@@ -789,9 +789,9 @@
 	int err;
 
 	mutex_lock(&ubi->buf_mutex);
-	memset(ubi->peb_buf1, 0x00, ubi->leb_size);
+	memset(ubi->peb_buf, 0x00, ubi->leb_size);
 
-	err = ubi_io_read(ubi, ubi->peb_buf1, pnum, ubi->leb_start,
+	err = ubi_io_read(ubi, ubi->peb_buf, pnum, ubi->leb_start,
 			  ubi->leb_size);
 	if (err == UBI_IO_BITFLIPS || mtd_is_eccerr(err)) {
 		/*
@@ -808,7 +808,7 @@
 	if (err)
 		goto out_unlock;
 
-	if (ubi_check_pattern(ubi->peb_buf1, 0xFF, ubi->leb_size))
+	if (ubi_check_pattern(ubi->peb_buf, 0xFF, ubi->leb_size))
 		goto out_unlock;
 
 	ubi_err("PEB %d contains corrupted VID header, and the data does not "
@@ -818,7 +818,7 @@
 	dbg_msg("hexdump of PEB %d offset %d, length %d",
 		pnum, ubi->leb_start, ubi->leb_size);
 	ubi_dbg_print_hex_dump(KERN_DEBUG, "", DUMP_PREFIX_OFFSET, 32, 1,
-			       ubi->peb_buf1, ubi->leb_size, 1);
+			       ubi->peb_buf, ubi->leb_size, 1);
 	err = 1;
 
 out_unlock: