arm64: dts: qcom: sm8250: camss: Define ports and ports address/size cells

Define the set of possible ports, one for each CSI PHY along with the port
address and size cells @ the SoC dtsi level.
Suggested-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Vladimir Zapolskiy <vladimir.zapolskiy@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221117003232.589734-7-bryan.odonoghue@linaro.org

arch/arm64/boot/dts/qcom/sm8250.dtsi

@@ -3908,6 +3908,35 @@ camss: camss@ac6a000 {
 					     "cam_hf_0_mnoc",
 					     "cam_sf_0_mnoc",
 					     "cam_sf_icp_mnoc";
+
+			ports {
+				#address-cells = <1>;
+				#size-cells = <0>;
+
+				port@0 {
+					reg = <0>;
+				};
+
+				port@1 {
+					reg = <1>;
+				};
+
+				port@2 {
+					reg = <2>;
+				};
+
+				port@3 {
+					reg = <3>;
+				};
+
+				port@4 {
+					reg = <4>;
+				};
+
+				port@5 {
+					reg = <5>;
+				};
+			};
 		};
 
 		camcc: clock-controller@ad00000 {