Merge pull request #36 from thebentern/add-always-powered-prefernce

Add is_always_powered user preference

radioconfig.proto

@@ -548,6 +548,12 @@ message RadioConfig {
      * (bitwise OR of PositionFlags)
      */
     uint32 position_flags = 150;
+    
+    /*
+     * Circumvents the logic block for determining whether the device is powered or not. 
+     * Useful for devices with finicky ADC issues on the battery sense pins.
+     */
+    bool is_always_powered = 151;
   }
 
   UserPreferences preferences = 1;