LF-10676-5 arm64: dts: imx: fix graph_child_address build warnings

Fix all the following build warnings:

Before:
1462  Warning (graph_child_address)
After:
69    Warning (graph_child_address)

Checked by:
$ make ARCH=arm64 W=1 dtbs 2>&1 | grep imx | grep graph_child_address | wc -l
122

e.g.
  DTC     arch/arm64/boot/dts/freescale/imx93-11x11-evk-mt9m114.dtb
../arch/arm64/boot/dts/freescale/imx93.dtsi:1288.28-1304.7: Warning (graph_child_address): /soc@0/bus@42800000/camera/csi@4ae00000: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
  also defined at ../arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts:1090.11-1105.3
  also defined at ../arch/arm64/boot/dts/freescale/imx93-11x11-evk-mt9m114.dts:133.11-135.3
../arch/arm64/boot/dts/freescale/imx93.dtsi:1306.33-1318.7: Warning (graph_child_address): /soc@0/bus@42800000/camera/pcsi@4ac10070: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
  also defined at ../arch/arm64/boot/dts/freescale/imx93-11x11-evk-mt9m114.dts:120.15-131.3
../arch/arm64/boot/dts/freescale/imx93.dtsi:1449.11-1460.7: Warning (graph_child_address): /soc@0/system-controller@4ac10000/dpi/ports: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
../arch/arm64/boot/dts/freescale/imx93.dtsi:1512.34-1554.5: Warning (graph_child_address): /soc@0/lcd-controller@4ae30000: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
  also defined at ../arch/arm64/boot/dts/freescale/imx93-11x11-evk.dts:413.8-416.3
../arch/arm64/boot/dts/freescale/imx93.dtsi:1633.18-1648.5: Warning (graph_child_address): /ldb-display-controller/lvds-channel@0: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>