Added I2C pin configuration

To configure the I2C pins call Wire.setPins(SDA_Pin, SCL_pin) prior to Wire.begin()

Author: thaanstad

libraries/Wire/Wire.h

@@ -39,6 +39,7 @@ class TwoWire : public Stream
     void begin(uint8_t);
     void end();
     void setClock(uint32_t);
+	void setPins(uint8_t pin_SDA, uint8_t pin_SCL);
 
     void beginTransmission(uint8_t);
     uint8_t endTransmission(bool stopBit);

libraries/Wire/Wire_nRF52.cpp

@@ -127,6 +127,12 @@ void TwoWire::setClock(uint32_t baudrate) {
   }
 }
 
+void TwoWire::setPins(uint8_t pin_SDA, uint8_t pin_SCL)
+{
+	this->_uc_pinSDA = g_ADigitalPinMap[pin_SDA];
+	this->_uc_pinSCL = g_ADigitalPinMap[pin_SCL];
+}
+
 void TwoWire::end() {
   if (master)
   {