R-Car DU Color Management Module (CMM) Support

configname: CONFIG_DRM_RCAR_USE_CMM

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>R-Car DU Color Management Module (CMM) Support
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Enable support for R-Car Color Management Module (CMM).