ARM: tegra: Add the Tamonten™ NG Evaluation Carrier board

Add support for the new Tamonten™ NG platform from Avionic Design.
Currently only I2C, MMC, USB and ethernet have benn tested.

Change-Id: I5668d97ed62ee5f8bb1ad1cacb52db9fe73380dc
Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Reviewed-on: http://review.adnet.avionic-design.de/139