Update to fix warning:
u-boot.itb.tmp: Warning (unit_address_vs_reg): Node /images/uboot@1
has a unit name, but no reg property
u-boot.itb.tmp: Warning (unit_address_vs_reg): Node /images/optee@1
has a unit name, but no reg property
u-boot.itb.tmp: Warning (unit_address_vs_reg): Node /images/fdt@1
has a unit name, but no reg property
u-boot.itb.tmp: Warning (unit_address_vs_reg): Node /configurations/conf@1
has a unit name, but no reg property
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>