[cuboxi] u-boot : use RGB=24 , force consoleblank=0
xbmc : speed up a little the build process
[cuboxi] xbmc : bump version to latest commit (better support for 1080p videos)
[cuboxi] linux :add patch for ipu (proposed by Stéphan)
[imx6] add default script for xbmc
[cuboxi] defconfig : don't use xorg by default