Platform support for Chrome hardware (transitional)

modulename: cros_ec_core.ko

configname: CONFIG_MFD_CROS_EC

Linux Kernel Configuration
└─>Device Drivers
└─>Platform support for Chrome hardware (transitional)
In linux kernel since version 3.1 (release Date: 2011-10-24)  
This is a transitional Kconfig option and will be removed after
everyone enables the parts individually.