arm64: dts: ti: k3-j7200: Remove "#address-cells" property from GPIO DT nodes

GPIO device tree nodes do not have child nodes. Therefore, "#address-cells"
property should not be added.

Fixes: e0b2e6af ("arm64: dts: ti: k3-j7200: Add gpio nodes")
Signed-off-by: Aswath Govindraju <a-govindraju@ti.com>
Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Link: https://lore.kernel.org/r/20210423064758.25520-1-a-govindraju@ti.com