arm64: zynqmp: Also generate images with single DT

Create u-boot-single.itb where only actual DTB is used not really multiple
of DTS from OF_LIST. This results in small files without option to change
DT.

Signed-off-by: Michal Simek <michal.simek@amd.com>
Link: https://lore.kernel.org/r/9362da506c13382da0c0d41ad8a111d9c1150f08.1732089924.git.michal.simek@amd.com
1 file changed