nicla-system: Add function for backwards compatibility.

Author: sebromero

Diff for: libraries/Nicla_System/src/Nicla_System.cpp

@@ -386,6 +386,11 @@ void nicla::synchronizeFastChargeSettings()
   }
 }
 
+void nicla::checkChgReg(){
+  synchronizeFastChargeSettings();
+}
+
+
 I2CLed  LEDR(red);
 I2CLed  LEDG(green);
 I2CLed  LEDB(blue);

Diff for: libraries/Nicla_System/src/Nicla_System.h

@@ -215,6 +215,9 @@ class nicla {
    */
   static void synchronizeFastChargeSettings();
 
+  [[deprecated("Use synchronizeFastChargeSettings() instead.")]]
+  static void checkChgReg();
+
   /** 
    * A cached version of the fast charge settings for the PMIC.
    * This is used to reapply the settings if the register got wiped.