am d36308c2: am 17a47098: use MEMGETBADBLOCK to look for bad blocks when reading MTD partitions

Merge commit 'd36308c26d3f2947f4ff49f2ecc22cbb659fdf37'

* commit 'd36308c26d3f2947f4ff49f2ecc22cbb659fdf37':
  use MEMGETBADBLOCK to look for bad blocks when reading MTD partitions