video:sunxi:hdmi:Import CEC support from A10s SDK

This commit seems to have suspend/resume display logic implemented.
Logic broadcasts "turn on" message for TV when device is turned on.
TODO: Give API for user space and remove application logic from kernel.
video:sunxi:disp:Remove illegal direct dependency to hdmi module
video:Import hdmi-cec framework

Framework was found from https://github.com/ffainelli/linux-hdmi-cec

Signed-off-by: Jari Helaakoski <tekkuli@gmail.com>
hdmi-cec:Fix oops when client closes connection

Signed-off-by: Jari Helaakoski <tekkuli@gmail.com>