Console on Freescale lpuart serial port

configname: CONFIG_SERIAL_FSL_LPUART_CONSOLE

Linux Kernel Configuration
└─>Device Drivers
└─>Character devices
└─>Serial drivers
└─>Console on Freescale lpuart serial port
In linux kernel since version 3.11 (release Date: 2013-09-02)  
If you have enabled the lpuart serial port on the Freescale SoCs,
you can make it the console by answering Y to this option.