Pseudo-port the projects and dual role demos for possible later multi-arch support.

Projects/MIDIToneGenerator/MIDIToneGenerator.c

@@ -185,12 +185,14 @@ ISR(TIMER0_COMPA_vect, ISR_BLOCK)
 /** Configures the board hardware and chip peripherals for the demo's functionality. */
 void SetupHardware(void)
 {
+#if (ARCH == ARCH_AVR8)
 	/* Disable watchdog if enabled by bootloader/fuses */
 	MCUSR &= ~(1 << WDRF);
 	wdt_disable();
 
 	/* Disable clock division */
 	clock_prescale_set(clock_div_1);
+#endif
 
 	/* Hardware Initialization */
 	LEDs_Init();

Projects/MIDIToneGenerator/MIDIToneGenerator.h

@@ -49,6 +49,7 @@
 
 		#include <LUFA/Drivers/Board/LEDs.h>
 		#include <LUFA/Drivers/USB/USB.h>
+		#include <LUFA/Platform/Platform.h>
 
 	/* Macros: */
 		/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */