[U-Boot] Undefined reference to'flash_sect_protect' in env_flash.c

Hi there,

I met this compiling error, any idea?

/common/env_flash.c:312: undefined reference to `flash_sect_protect' /common/env_flash.c:316: undefined reference to `flash_sect_erase' /common/env_flash.c:329: undefined reference to `flash_sect_protect' make: *** [u-boot] Error 1

Regards,

Johnson Yu