fs/smartfs : Fix logic of smart_scan regarding selecting winner
fs/smartfs : Fix logic of smart_scan regarding selecting winner

If there are duplicated sector due to sudden power off, smart_scan checks
sequence value to determine winner and loser.
Based on crc, it checks 16bits or 8bits value.
This is came from nuttx's fixing

an4967/TizenRT,jeongarmy/TizenRT,sunghan-chang/TizenRT,jeongchanKim/TizenRT,an4967/TizenRT,jsdosa/TizenRT,jeongchanKim/TizenRT,Samsung/TizenRT,Samsung/TizenRT,an4967/TizenRT,junmin-kim/TizenRT,sunghan-chang/TizenRT,junmin-kim/TizenRT,junmin-kim/TizenRT,jsdosa/TizenRT,jeongchanKim/TizenRT,sunghan-chang/TizenRT,jsdosa/TizenRT,Samsung/TizenRT,an4967/TizenRT,jeongchanKim/TizenRT,jeongchanKim/TizenRT,jeongchanKim/TizenRT,jeongarmy/TizenRT,pillip8282/TizenRT,pillip8282/TizenRT,sunghan-chang/TizenRT,pillip8282/TizenRT,jeongarmy/TizenRT,jsdosa/TizenRT,jsdosa/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,pillip8282/TizenRT,jeongarmy/TizenRT,jeongchanKim/TizenRT,junmin-kim/TizenRT,sunghan-chang/TizenRT,jeongarmy/TizenRT,an4967/TizenRT,Samsung/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,pillip8282/TizenRT,jeongarmy/TizenRT,jsdosa/TizenRT,an4967/TizenRT,sunghan-chang/TizenRT,jeongarmy/TizenRT,junmin-kim/TizenRT,an4967/TizenRT,pillip8282/TizenRT,sunghan-chang/TizenRT,pillip8282/TizenRT,Samsung/TizenRT,jsdosa/TizenRT