Maxim MAX77843 EXTCON Support

modulename: extcon-max77843.ko

configname: CONFIG_EXTCON_MAX77843

Linux Kernel Configuration
└─>Device Drivers
└─>External Connector Class (extcon) support
└─>Maxim MAX77843 EXTCON Support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
If you say yes here you get support for the MUIC device of
Maxim MAX77843. The MAX77843 MUIC is a USB port accessory
detector add switch.

source code:
selects
CONFIG_IRQ_DOMAIN
CONFIG_REGMAP_I2C