Fix beaglebone boot issue with large kernel images overwriting Device Tree.
See very detailed comments inside the patch.
The original patch is being reviewed upstream and is targeting mainline U-boot
version 2014.07. This is the adaptation of the patch for 2013.07 version we use
(From OE-Core rev: cd495307d233b81ebeb43198d13bbd4b3ad7407f)
Signed-off-by: Denys Dmytriyenko <denys@ti.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>