armv8: layerscape: Build u-boot-with-spl.bin for selected boards

armv8: layerscape: Build u-boot-with-spl.bin for selected boards

This patch reverts the changes made for ls1088a and ls2080a
based boards in commit 18b6dd6cb0564 ("armv8: layerscape: Drop
u-boot-with-spl.bin for selected boards").

u-boot-with-spl.bin is required for Gen3 based SoC where internal
ROM copy data in the internal memory

CC: Prabhakar Kushwaha <[email protected]>
CC: Priyanka Jain <[email protected]>
CC: Pramod Kumar <[email protected]>
CC: Ashish Kumar <[email protected]>
CC: York Sun <[email protected]>
Signed-off-by: Jagdish Gediya <[email protected]>
Reviewed-by: Prabhakar Kushwaha <[email protected]>
Reviewed-by: York Sun <[email protected]>