UBI: fix minor stylistic issues

Fix checkpatch.pl errors and warnings:

* space before tab
* line over 80 characters
* include linux/ioctl.h instead of asm/ioctl.h
Signed-off-by: NArtem Bityutskiy <Artem.Bityutskiy@nokia.com>

drivers/mtd/ubi/io.c

@@ -189,8 +189,8 @@ int ubi_io_read(const struct ubi_device *ubi, void *buf, int pnum, int offset,
 		}
 
 		if (retries++ < UBI_IO_RETRIES) {
-			dbg_io("error %d%s while reading %d bytes from PEB %d:%d,"
-			       " read only %zd bytes, retry",
+			dbg_io("error %d%s while reading %d bytes from PEB "
+			       "%d:%d, read only %zd bytes, retry",
 			       err, errstr, len, pnum, offset, read);
 			yield();
 			goto retry;

drivers/mtd/ubi/scan.c

@@ -1103,7 +1103,7 @@ static int check_what_we_have(struct ubi_device *ubi, struct ubi_scan_info *si)
 		 * otherwise, only print a warning.
 		 */
 		if (si->corr_peb_count >= max_corr) {
-			ubi_err("too many corrupted PEBs, refusing this device");
+			ubi_err("too many corrupted PEBs, refusing");
 			return -EINVAL;
 		}
 	}

drivers/mtd/ubi/wl.c

@@ -1570,7 +1570,8 @@ void ubi_wl_close(struct ubi_device *ubi)
  * @ec: the erase counter to check
  *
  * This function returns zero if the erase counter of physical eraseblock @pnum
- * is equivalent to @ec, and a negative error code if not or if an error occurred.
+ * is equivalent to @ec, and a negative error code if not or if an error
+ * occurred.
  */
 static int paranoid_check_ec(struct ubi_device *ubi, int pnum, int ec)
 {

include/linux/mtd/ubi.h

@@ -21,7 +21,7 @@
 #ifndef __LINUX_UBI_H__
 #define __LINUX_UBI_H__
 
-#include <asm/ioctl.h>
+#include <linux/ioctl.h>
 #include <linux/types.h>
 #include <mtd/ubi-user.h>