demo-image-cfa: add browser + qt demo + movie player

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
cfa100xx: add a new machine

This machine aims to build an image compatible with all the crystalfontz
cfa10036 based boards.
recipes-kernel: add 3.10 stable kernel

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
recipes-kernel/linux: Introduce v3.12

Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>