ipq806x: fix Netgear R7500v2 memory

Netgear R7500v2 has 512MB of RAM with 2MB reserved block in the end of memory region.

Signed-off-by: Pavel Kubelun <[email protected]>

target/linux/ipq806x/files/arch/arm/boot/dts/qcom-ipq8064-r7500v2.dts

@@ -7,7 +7,7 @@
 	compatible = "netgear,r7500v2", "qcom,ipq8064";
 
 	memory@0 {
-		reg = <0x42000000 0xe000000>;
+		reg = <0x42000000 0x1e000000>;
 		device_type = "memory";
 	};
 
@@ -19,6 +19,11 @@
 			reg = <0x41200000 0x300000>;
 			no-map;
 		};
+
+		rsvd@5fe00000 {
+			reg = <0x5fe00000 0x200000>;
+			reusable;
+		};
 	};
 
 	aliases {