Pull UBI/UBIFS updates from Richard Weinberger:
 "This contains mostly cleanups and minor improvements of UBI and UBIFS"

* tag 'upstream-4.7-rc1' of git://git.infradead.org/linux-ubifs:
  ubifs: ubifs_dump_inode: Fix dumping field bulk_read
  UBI: Fix static volume checks when Fastmap is used
  UBI: Set free_count to zero before walking through erase list
  UBI: Silence an unintialized variable warning
  UBI: Clean up return in ubi_remove_volume()
  UBI: Modify wrong comment in ubi_leb_map function.
  UBI: Don't read back all data in ubi_eba_copy_leb()
  UBI: Add ro-mode sysfs attribute