RZ/G1N pin control support

modulename: pfc-r8a7791.ko

configname: CONFIG_PINCTRL_PFC_R8A7744

Linux Kernel Configuration
└─>Device Drivers
└─>Pin controllers
└─>RZ/G1N pin control support
In linux kernel since version 4.2 (release Date: 2015-08-30)  
source code:
drivers/pinctrl/sh-pfc/pfc-r8a7791.c
depends
CONFIG_PINCTRL

is depended by
CONFIG_PINCTRL_SH_PFC