Insignal Code for Arndale Octa - v03

tag: samsung-lt-arndale_octa-2014.01
* Added fixes for building the u-boot with latest toolchain

tag: samsung-lt-arndale_octa-2013.12-1
* Updated code to read MAC address from SoC and update bootargs.

tag: samsung-lt-arndale_octa-2013.12

* Original code posted by Insignal on [1] is rebased on v2012.07 to
figure out the changes done by Insignal on upstream u-boot.
* Device tree support is enabled in arndale_octa_config.h
* Support added to read and execute boot.scr from fat partition

[1] git://git.insignal.co.kr/insignal/arndale_octa-jb_mr1.1/u-boot