ARM: dts: am335x-phycore-som: fix rv4162 compatible

The rv4162 compatbile string is missing the vendor part, add it.
Signed-off-by: NAlexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: NTony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am335x-phycore-som.dtsi

@@ -138,7 +138,7 @@
 	};
 
 	i2c_rtc: rtc@68 {
-		compatible = "rv4162";
+		compatible = "microcrystal,rv4162";
 		reg = <0x68>;
 		status = "disabled";
 	};