drivers/bch: fix linking error
drivers/bch: fix linking error

This patch fixes a linking error of bchdev_unregister.c.
Change _err to fdbg.

Change-Id: I7643bada69bf8dba80ec3bc441ca4c9933e12e6d
Signed-off-by: EunBong Song <1a7e7e98e070490e67aa35ab67fbf9fdda8f48ac@samsung.com>

JeongJunSik/TizenRT,guswns0528/TizenRT,lokeshbv/TizenRT,jsdosa/TizenRT,dr-venkman/TizenRT,junmin-kim/TizenRT,Samsung/TizenRT,JunhwanPark/TizenRT,lokeshbv/TizenRT,pillip8282/TizenRT,manoharahk/TizenRT,HONGCHAEHEE/TizenRT,yashwanth686007/TizenRTOS,jeongchanKim/TizenRT,lssgood/TizenRT,JeonginKim/TizenRT,chanijjani/TizenRT,kimusan/TizenRT,davidfather/TizenRT,Samsung/TizenRT,olegartys/TizenRT,an4967/TizenRT,JunhwanPark/TizenRT,Samsung/TizenRT,EunBongSong/TizenRT,youngeunpark/TizenRT,shivgarg/TizenRT,youngeunpark/TizenRT,EunBongSong/TizenRT,lssgood/TizenRT,yashwanth686007/TizenRTOS,btheosam/TizenRT,EunBongSong/TizenRT,lokeshbv/TizenRT,Samsung/TizenRT,JeongJunSik/TizenRT,pillip8282/TizenRT,kimusan/TizenRT,shivgarg/TizenRT,Parkjihooni6186/TizenRT,davidfather/TizenRT,EunBongSong/TizenRT,EunBongSong/TizenRT,jsdosa/TizenRT,btheosam/TizenRT,olegartys/TizenRT,jeongarmy/TizenRT,yashwanth686007/TizenRTOS,jeongarmy/TizenRT,sunghan-chang/TizenRT,sangwon03/TizenRT,HONGCHAEHEE/TizenRT,JeonginKim/TizenRT,davidfather/TizenRT,jeongarmy/TizenRT,sangwon03/TizenRT,guswns0528/TizenRT,manoharahk/TizenRT,chanijjani/TizenRT,dr-venkman/TizenRT,dr-venkman/TizenRT,chanijjani/TizenRT,JeongJunSik/TizenRT,jsdosa/TizenRT,dr-venkman/TizenRT,sunghan-chang/TizenRT,junmin-kim/TizenRT,guswns0528/TizenRT,Parkjihooni6186/TizenRT,junmin-kim/TizenRT,olegartys/TizenRT,chanijjani/TizenRT,shivgarg/TizenRT,heejin-kim/TizenRT,JunhwanPark/TizenRT,manoharahk/TizenRT,manoharahk/TizenRT,JeonginKim/TizenRT,an4967/TizenRT,sunghan-chang/TizenRT,sunghan-chang/TizenRT,lssgood/TizenRT,olegartys/TizenRT,jeongchanKim/TizenRT,davidfather/TizenRT,HONGCHAEHEE/TizenRT,sunghan-chang/TizenRT,chanijjani/TizenRT,manoharahk/TizenRT,Samsung/TizenRT,Samsung/TizenRT,lssgood/TizenRT,jeongarmy/TizenRT,JeonginKim/TizenRT,youngeunpark/TizenRT,Parkjihooni6186/TizenRT,shivgarg/TizenRT,sunghan-chang/TizenRT,yashwanth686007/TizenRTOS,JeongJunSik/TizenRT,jeongchanKim/TizenRT,lokeshbv/TizenRT,Parkjihooni6186/TizenRT,btheosam/TizenRT,EunBongSong/TizenRT,junmin-kim/TizenRT,JeonginKim/TizenRT,davidfather/TizenRT,jsdosa/TizenRT,kimusan/TizenRT,an4967/TizenRT,heejin-kim/TizenRT,lokeshbv/TizenRT,chanijjani/TizenRT,dr-venkman/TizenRT,youngeunpark/TizenRT,btheosam/TizenRT,btheosam/TizenRT,guswns0528/TizenRT,olegartys/TizenRT,kimusan/TizenRT,JunhwanPark/TizenRT,jeongarmy/TizenRT,JeongJunSik/TizenRT,sunghan-chang/TizenRT,kimusan/TizenRT,heejin-kim/TizenRT,jsdosa/TizenRT,pillip8282/TizenRT,heejin-kim/TizenRT,yashwanth686007/TizenRTOS,Samsung/TizenRT,jsdosa/TizenRT,JunhwanPark/TizenRT,pillip8282/TizenRT,jsdosa/TizenRT,junmin-kim/TizenRT,Parkjihooni6186/TizenRT,olegartys/TizenRT,jeongchanKim/TizenRT,junmin-kim/TizenRT,heejin-kim/TizenRT,dr-venkman/TizenRT,heejin-kim/TizenRT,sangwon03/TizenRT,jeongarmy/TizenRT,sangwon03/TizenRT,HONGCHAEHEE/TizenRT,jeongarmy/TizenRT,jeongchanKim/TizenRT,HONGCHAEHEE/TizenRT,btheosam/TizenRT,guswns0528/TizenRT,JunhwanPark/TizenRT,an4967/TizenRT,manoharahk/TizenRT,pillip8282/TizenRT,pillip8282/TizenRT,JeongJunSik/TizenRT,kimusan/TizenRT,lssgood/TizenRT,pillip8282/TizenRT,Parkjihooni6186/TizenRT,sangwon03/TizenRT,youngeunpark/TizenRT,an4967/TizenRT,junmin-kim/TizenRT,JeonginKim/TizenRT,an4967/TizenRT,davidfather/TizenRT,jeongchanKim/TizenRT,youngeunpark/TizenRT,sangwon03/TizenRT,an4967/TizenRT,yashwanth686007/TizenRTOS,lokeshbv/TizenRT,shivgarg/TizenRT,lssgood/TizenRT,shivgarg/TizenRT,jeongchanKim/TizenRT,davidfather/TizenRT,HONGCHAEHEE/TizenRT,chanijjani/TizenRT