Add submission # 3739

#3739

Author: ArduinoBot

registry.txt

@@ -6578,3 +6578,4 @@ https://github.com/m5stack/M5StickCPlus2.git|Contributed|M5StickCPlus2
 https://github.com/he0119/arduino-miio.git|Contributed|SerialMIIO
 https://github.com/cotestatnt/Arduino-MySQL.git|Contributed|MySQL Query Client
 https://github.com/RobTillaart/PCA9549.git|Contributed|PCA9549
+https://github.com/m-shintaro/RTC_RX8025NB.git|Contributed|RTC_RX8025NB