MPC512x/MPC8xxx GPIO support

modulename: gpio-mpc8xxx.ko

configname: CONFIG_GPIO_MPC8XXX

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>MPC512x/MPC8xxx GPIO support
In linux kernel since version 3.1 (release Date: 2011-10-24)  
Say Y here if you're going to use hardware that connects to the
MPC512x/831x/834x/837x/8572/8610 GPIOs.

source code:
drivers/gpio/gpio-mpc8xxx.c