zc702-zynq7 : Update uEnv.txt devicetree filename to match updates.

The dtb filename changed in updates to meta-xilinx.

Signed-off-by: Philip Balister <philip@balister.org>
Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
zedboard : Add files to build working boot.bin file.

This uses the GPL files from:

https://github.com/Xilinx/embeddedsw/tree/master/lib/sw_apps/zynq_fsbl/misc/zed

and renames them. There is a u-boot patch to use the _gpl named versions,
when this is upstream and meta-xilnx uses this version, we can switch to
using the files with the proper names.

Signed-off-by: Philip Balister <philip@balister.org>
Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
machine-xilinx-board.inc : Add definition of boot fields for wic utility.

With this, and the files added to the machine config you can run:

wic create ../oe-core/scripts/lib/image/canned-wks/sdimage-bootpart.wks -e some-image -o images/$MACHINE

and end up with a file you can dd onto an sd card.

Signed-off-by: Philip Balister <philip@balister.org>
Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
zedboard : Add files to support bootable image creation with wic.

Signed-off-by: Philip Balister <philip@balister.org>
Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>
zc702 : Add files to support bootable image creation with wic.

Signed-off-by: Philip Balister <philip@balister.org>
Signed-off-by: Nathan Rossi <nathan.rossi@xilinx.com>