Rockchip RGB support

configname: CONFIG_ROCKCHIP_RGB

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Direct Rendering Manager (XFree86 4.1.0 and higher DRI support)
└─>Pin controllers
└─>Rockchip RGB support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
Choose this option to enable support for Rockchip RGB output.
Some Rockchip CRTCs, like rv1108, can directly output parallel
and serial RGB format to panel or connect to a conversion chip.
say Y to enable its driver.