* Merge u-boot-dey-rev_2015.04.inc into the recipe. There is no need to
split the recipe, as there is no other recipe using this u-boot code.
* Update uboot configurations to the new format '_defconfig'. Also add
the new 2GB variant.
* Remove PREFERRED_VERSION_u-boot-dey for CC6, as there is only one
version available for this platform.
https://jira.digi.com/browse/DEL-1829
Signed-off-by: Javier Viguera <javier.viguera@digi.com>
Alex Gonzalez
Javier Viguera