ARM: mxs: dt: Add Crystalfontz CFA-10056 device tree

The CFA-10056 is a breakout board for the CFA-10036, and is
basically a CFA-10037, with a 4.3" screen.

Signed-off-by: Brian Lilly <brian@crystalfontz.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>