arch: arm: dts: k3-am642-phyboard-electra: Add fixed partitions

Add a fixed partitions node to the AM64x device tree so that it can
be used to fixup the Linux device tree.

Signed-off-by: Nathan Morrisson <nmorrisson@phytec.com>
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Reviewed-by: Daniel Schultz <d.schultz@phytec.de>
diff --git a/arch/arm/dts/k3-am642-phyboard-electra-rdk-u-boot.dtsi b/arch/arm/dts/k3-am642-phyboard-electra-rdk-u-boot.dtsi
index 4677c35..8f3c3a1 100644
--- a/arch/arm/dts/k3-am642-phyboard-electra-rdk-u-boot.dtsi
+++ b/arch/arm/dts/k3-am642-phyboard-electra-rdk-u-boot.dtsi
@@ -115,6 +115,32 @@
 	bootph-all;
 	flash@0 {
 		bootph-all;
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "ospi.tiboot3";
+				reg = <0x00000 0x80000>;
+			};
+			partition@80000 {
+				label = "ospi.tispl";
+				reg = <0x080000 0x200000>;
+			};
+			partition@280000 {
+				label = "ospi.u-boot";
+				reg = <0x280000 0x400000>;
+			};
+			partition@680000 {
+				label = "ospi.env";
+				reg = <0x680000 0x40000>;
+			};
+			partition@6c0000 {
+				label = "ospi.env.backup";
+				reg = <0x6c0000 0x40000>;
+			};
+		};
 	};
 };