power loss results in mounting failure on SLC NAND

[martin bayern]

hi, Richard
Seems it works, but I cannot much sure that.  I need more tests.
Normally, all corrupted blocks (because of power loss during erasing) will be re-erase during attach stage.
you know it is not easy to reproduce. the corrupted block should be behind first-64-PEB, also it results from
power loss during erasing. I only reproduced one-time during last two-week testing. Maybe because of re-flash
NAND. Anyway, as long as I have any new updates, I will touch you.