Add support for imx6q Phytec phyFLEX-i.MX6 Quad (aka pfla02 and pbab01).
 - Module pfla02
 - Carrier-Board pbab01
Signed-off-by: Christian Hemp <c.hemp@phytec.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>