bec02d57fb
We fail to detect certain bad blocks (marked in the factory as bad, I think?) when reading mtd partitions. These come back as a block of all zeros. Since it's fairly unlikely a legitimate boot or recovery block will contain 128k of zeros, change mtdutils to skip over such blocks. Arve says https://review.source.android.com/10535 may be a long-term fix for this, but he isn't yet sure.