Move to use generic handoff dtsi (socfpga_arria10-handoff.dtsi) and include
the specify generated _handoff.h header file from qts-filter-a10.sh script.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Move Uboot specific properties to *u-boot.dtsi files.
Preparation to sync Arria 10 device tree from Linux.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>