USB GPIO extcon support

modulename: extcon-usb-gpio.ko

configname: CONFIG_EXTCON_USB_GPIO

Linux Kernel Configuration
└─>Device Drivers
└─>External Connector Class (extcon) support
└─>GPIO Support
└─>USB GPIO extcon support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
Say Y here to enable GPIO based USB cable detection extcon support.
Used typically if GPIO is used for USB ID pin detection.

source code:
depends
CONFIG_EXTCON
CONFIG_COMPILE_TEST or CONFIG_GPIOLIB