Add TI DA8xx support: DA8xx includes

Provides initial support for TI OMAP-L1x/DA8xx SoC devices.
See http://www.ti.com



The DA8xx devices are similar to DaVinci devices but have a differing
memory map and updated peripheral versions.

Signed-off-by: Nick Thompson <nick.thompson@gefanuc.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>