Enable HDMI CEC support for OMAP4

configname: CONFIG_OMAP4_DSS_HDMI_CEC

Linux Kernel Configuration
└─>Device Drivers
└─>Graphics support
└─>Enable HDMI CEC support for OMAP4
In linux kernel since version 3.10 (release Date: 2013-06-30)  
When selected the HDMI transmitter will support the CEC feature.