Merge branch 'master' of git://www.denx.de/git/u-boot-imx

arm: dts: add device tree for i.MX6ULL

Add device tree for i.MX6ULL.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefano Babic <sbabic@denx.de>