The standard U-Boot boot scripts for Duckbills expect the
Linux kernel and device tree files installed below /boot
within the (ext4) root filesystem.
Also a raw zImage is expected instead of uImage.
Extend the SD card generation accordingly and while at,
install all possible Duckbill DT blobs there.
Signed-off-by: Michael Heimpold <mhei@heimpold.de>
77a1a5ef8e