drm/i2c: tda998x: add DT support and other improvements

This patch set contains various extensions to the tda998x driver:

- simplify the i2c read/write
- code cleanup and fix some small errors
- use HDMI constants
- don't read write-only registers
- add DT support
- use irq for connection status and EDID read
- get a better status of the HDMI connector
- use the tda998x video format when cea mode
- add tda998x codec interface

- v2
- decompose patches with different topics
- fix some bad i2c register values
- add audio codec interface

Ken ar c'henta?	|	      ** Breizh ha Linux atav! **
Jef		|		http://moinejf.free.fr/

Next time you post patches, please ensure that each patch is a reply to your series covering message, so that they can be easily threaded together. It's a pain to have to search around for all the individual patches amongst other people's traffic.

Thanks.

FTTC broadband for 0.8mile line: 5.8Mbps down 500kbps up.  Estimation
in database were 13.1 to 19Mbit for a good line, about 7.5+ for a bad.
Estimate before purchase was "up to 13.2Mbit".