APM X-Gene GPIO standby controller support

modulename: gpio-xgene-sb.ko

configname: CONFIG_GPIO_XGENE_SB

Linux Kernel Configuration
└─>Device Drivers
└─>GPIO Support
└─>Memory mapped GPIO drivers
└─>APM X-Gene GPIO standby controller support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
This driver supports the GPIO block within the APM X-Gene
Standby Domain. Say yes here to enable the GPIO functionality.

source code: