HAL_PX4: fixed build

libraries/AP_HAL_PX4/Console.cpp

@@ -45,4 +45,9 @@ size_t PX4ConsoleDriver::write(uint8_t c) {
 	return _uart->write(c);
 }
 
+size_t PX4ConsoleDriver::write(const uint8_t *buffer, size_t size)
+{
+    return _uart->write(buffer, size);
+}
+
 #endif

libraries/AP_HAL_PX4/Console.h

@@ -19,6 +19,7 @@ public:
     int16_t read();
 
     size_t write(uint8_t c);
+    size_t write(const uint8_t *buffer, size_t size);
 
 private:
     PX4UARTDriver *_uart;