In an attempt to improve the documentation of the BBT code, I am expanding
the comments I left in commit: 58373ff0afff4cc8ac40608872995f4d87eb72ec
mtd: nand: more BB Detection refactoring and dynamic scan options
Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>