[stm32] Add Gpio connect() method for clock output to RCC driver

Author: chris-durand

src/modm/platform/clock/stm32/rcc.hpp.in

@@ -3,7 +3,7 @@
  * Copyright (c) 2012, 2017, Fabian Greif
  * Copyright (c) 2012, 2014-2017, Niklas Hauser
  * Copyright (c) 2013-2014, Kevin Läufer
- * Copyright (c) 2018, 2021, Christopher Durand
+ * Copyright (c) 2018, 2021-2022, Christopher Durand
  *
  * This file is part of the modm project.
  *
@@ -19,6 +19,7 @@
 #include <stdint.h>
 #include "../device.hpp"
 #include <modm/platform/core/peripherals.hpp>
+#include <modm/platform/gpio/connector.hpp>
 #include <modm/architecture/interface/delay.hpp>
 
 namespace modm::platform
@@ -843,6 +844,14 @@ public:
 	static void
 	updateCoreFrequency();
 
+	template< class... Signals >
+	static void
+	connect()
+	{
+		using Connector = GpioConnector<Peripheral::Rcc, Signals...>;
+		Connector::connect();
+	}
+
 public:
 	template< Peripheral peripheral >
 	static void