arm: dts: k3-am64-evm: Make chip id available before pre-reloc

Chipid will be needed for SoC detection for all stages of U-Boot.
So make it u-boot,dm-spl

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>

arch/arm/dts/k3-am642-evm-u-boot.dtsi

@@ -21,6 +21,13 @@
 	};
 };
 
+&main_conf {
+	u-boot,dm-spl;
+	chipid@14 {
+		u-boot,dm-spl;
+	};
+};
+
 &main_uart0 {
 	u-boot,dm-spl;
 };