ramips: Cudy WR1300v2 fix mt7613 calibration data length

Since MT7613 is handled by MT7615 driver, and other devices using MT7615
have reg = <0x8000 0x4da8>; this needs updating or eeprom data fails to load.

Signed-off-by: Filip Milivojevic <zekica@gmail.com>

target/linux/ramips/dts/mt7621_cudy_wr1300-v2.dts

@@ -90,7 +90,7 @@
 				};
 
 				eeprom_factory_8000: eeprom@8000 {
-					reg = <0x8000 0x200>;
+					reg = <0x8000 0x4da8>;
 				};
 			};