Since macros MTDSWAP_ECNT_MIN() and MTDSWAP_ECNT_MAX() have been
defined in mtdswap.c, use them instead of open-coding.
Signed-off-by: NGeliang Tang <geliangtang@gmail.com>
Acked-by: NMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: NBrian Norris <computersforpeace@gmail.com>