Update mfg scripts to support bad blocks in NAND

Update scripts used for manufacturing to support NAND flash chips that have bad
erase blocks in their kernel partitions.

The uloader.bin and barebox.bin files that have been used here are from commit
fcbe72e407df2de0e4d228d3727fcc8ea26c418c in the loader-bin repository.

Change-Id: I52965b521ca3b410e34bd5da5a900c1657508611
2 files changed