arm64: dts: exynos: add chipid node for exynosautov9 SoC

It can be compatible with exynos850's chipid. The SoC has eight chipid
registers that can be used for OTP.

Cc: Sam Protsenko <semen.protsenko@linaro.org>
Signed-off-by: Chanho Park <chanho61.park@samsung.com>
Link: https://lore.kernel.org/r/20211021012017.158919-3-chanho61.park@samsung.comSigned-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>

arch/arm64/boot/dts/exynos/exynosautov9.dtsi

@@ -184,6 +184,11 @@ soc: soc@0 {
 		#size-cells = <1>;
 		ranges = <0x0 0x0 0x0 0x20000000>;
 
+		chipid@10000000 {
+			compatible = "samsung,exynos850-chipid";
+			reg = <0x10000000 0x24>;
+		};
+
 		gic: interrupt-controller@10101000 {
 			compatible = "arm,gic-400";
 			#interrupt-cells = <3>;