ath79: cosmetic fixes for partition node of D-Link DIR-825 B1

Make the node name match the reg property and remove the unused
DT label.

Signed-off-by: Adrian Schmutzler <[email protected]>

target/linux/ath79/dts/ar7161_dlink_dir-825-b1.dts

@@ -201,7 +201,7 @@
 				reg = <0x050000 0x610000>;
 			};
 
-			caldata: partition@60000 {
+			partition@660000 {
 				label = "caldata";
 				reg = <0x660000 0x010000>;
 				read-only;