The BINARY files given in the config files are expected to be relative
to the place kwbimage is called from. This is bad since it breaks where
kwbimage is called from the build directory and not the source
directory.
It makes more sense to make the paths in the config files relative
to the config files which works with out of tree builds and is also
more what a user normally expects.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

This converts Marvell Armada XP based Marvell Armada XP GP
to PBL_MULTI_IMAGES. A DT overlay is added to keep possible
barebox-specific changes separated and added to lowlevel
board init.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>

The Armada XP GP platform is an evaluation platform designed by
Marvell, that uses the MV78460 quad-core SoC from the Armada XP
family.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>