RZ/V2L clock support

modulename: r9a07g044-cpg.ko

configname: CONFIG_CLK_R9A07G054

Linux Kernel Configuration
└─>Device Drivers
└─>Common Clock Framework
└─>RZ/V2L clock support
In linux kernel since version 5.2 (release Date: 2019-07-07)  
source code:
drivers/clk/renesas/r9a07g044-cpg.c