arm64: dts: ti: k3-am62p5-sk: fix graph_child_address warnings

arm64: dts: ti: k3-am62p5-sk: fix graph_child_address warnings

Fix the following warnings that are thrown when building dtbs with W=1:

../arch/arm64/boot/dts/ti/k3-am62p5-sk.dts:367.10-376.6: Warning (graph_child_address): /bus@f0000/i2c@20000000/usb-power-controller@3f/connector/ports: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
../arch/arm64/boot/dts/ti/k3-am62p-j722s-common-main.dtsi:647.22-657.5: Warning (graph_child_address): /bus@f0000/usb@f900000/usb@31000000: graph node has single child node 'port@0', #address-cells/#size-cells are not necessary
  also defined at ../arch/arm64/boot/dts/ti/k3-am62p5-sk.dts:517.7-528.3

Cc: Roger Quadros <rogerq@kernel.org>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20240626101520.1782320-2-d-gole@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>