ARM: tegra: initial add of Colibri T30

ARM: tegra: initial add of Colibri T30

This patch adds the device tree to support Toradex Colibri T30, a
computer on module which can be used on different carrier boards.

The module consists of a Tegra 30 SoC, two PMIC, DDR3L RAM, eMMC and
a AX88772B USB Ethernet Controller. Furthermore, there is a STMPE811
and SGTL5000 audio codec which are not yet supported. Anything
that is not self contained on the module is disabled by default.

The device tree for the Evaluation Board includes the modules
device tree and enables the supported pheripherials of the carrier
board (the Evaluation Board supports almost all of them). The
wakeup key is definied by the Colibri standard as wakeup pin for
resume.