Correct ping return type

Author: PaulZC

src/u-blox_GNSS.cpp

@@ -665,7 +665,7 @@ uint16_t DevUBLOXGNSS::available()
 }
 // For I2C, ping the _address
 // Not Applicable for SPI and Serial
-uint16_t DevUBLOXGNSS::ping()
+bool DevUBLOXGNSS::ping()
 {
   return _sfeBus->ping();
 }

src/u-blox_GNSS.h

@@ -108,7 +108,7 @@ class DevUBLOXGNSS
   void setCommunicationBus(SparkFun_UBLOX_GNSS::GNSSDeviceBus &theBus);
   // For I2C, ping the _address
   // Not Applicable for SPI and Serial
-  uint16_t ping();
+  bool ping();
   // For Serial, return Serial.available()
   // For I2C, read registers 0xFD and 0xFE. Return bytes available as uint16_t
   // Not Applicable for SPI