brcm63xx: update DT RedBoot binding for the Inventel Livebox 1

linux,part-probe should be avoided as its only supported with OpenWrt
downstream patch that is going to be dropped eventually.

Signed-off-by: Rafał Miłecki <[email protected]>
Signed-off-by: Jonas Gorski <[email protected]>

target/linux/brcm63xx/dts/livebox-blue-5g.dts

@@ -69,7 +69,9 @@
 	reg = <0x1e400000 0x800000>;
 	status = "ok";
 
-	linux,part-probe = "RedBoot";
+	partitions {
+		compatible = "redhat,redboot-partitions";
+	};
 };
 
 &pinctrl {