Fix the following warning from a 'make dtbs W=1':
arch/arm64/boot/dts/freescale/imx8mp-venice-gw74xx-imx219.dtso:65.10-70.5:
Warning (unit_address_vs_reg): /fragment@3/__overlay__/ports/port@0:
node has a unit name, but no reg or ranges property
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>