Debugfs filesystem support

configname: CONFIG_FB_OMAP2_DSS_DEBUGFS

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Frame buffer Devices
└─>Device Tree and Open Firmware support
└─>OMAP2+ frame buffer support
└─>Debugfs filesystem support
In linux kernel since version 4.1 (release Date: 2015-06-21)  
This enables debugfs for OMAPDSS at <debugfs>/omapdss. This enables
querying about clock configuration and register configuration of dss,
dispc, dsi, hdmi and rfbi.