arm64: dts: s32gxxxa-rdb: Add PCA85073A RTC module over I2C0

Add support for the PCA85073A RTC module connected via I2C0 on
S32G274A-RDB2 and S32G399A-RDB3 boards.

Note that the PCA85073A RTC module is not battery backed.

Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

Author: Ciprian Marian Costea

arch/arm64/boot/dts/freescale/s32gxxxa-rdb.dtsi

@@ -153,6 +153,11 @@
 		gpio-controller;
 		#gpio-cells = <2>;
 	};
+
+	pca85073a: rtc@51 {
+		compatible = "nxp,pca85073a";
+		reg = <0x51>;
+	};
 };
 
 &i2c2 {