R-Car E3 System Controller support

modulename: r8a77990-sysc.ko

configname: CONFIG_SYSC_R8A77990

Linux Kernel Configuration
└─>Device Drivers
└─>SOC (System On Chip) specific Drivers
└─>R-Car E3 System Controller support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
source code:
drivers/soc/renesas/r8a77990-sysc.c