Enable Analog Devices ADV7511 CEC support

configname: CONFIG_VIDEO_ADV7511_CEC

Linux Kernel Configuration
└─>Device Drivers
└─>Multimedia support
└─>Media ancillary drivers
└─>Video encoders
└─>Enable Analog Devices ADV7511 CEC support
In linux kernel since version 3.10 (release Date: 2013-06-30)  
When selected the adv7511 will support the optional
HDMI CEC feature.

selects
CONFIG_CEC_CORE