arm64: dts: fsl: fix ifc simple-bus unit address format warnings

It fixes LS family SoCs device tree dtc warning in IFC child nodes.

Warning (simple_bus_reg): Node /soc/ifc@1530000/nor@0,0 simple-bus unit address format error, expected "0"
Warning (simple_bus_reg): Node /soc/ifc@1530000/nand@1,0 simple-bus unit address format error, expected "100000000"
Warning (simple_bus_reg): Node /soc/ifc@1530000/board-control@2,0 simple-bus unit address format error, expected "200000000"

Signed-off-by: Shawn Guo <shawnguo@kernel.org>