Pseudo-port the host mode demos for possible later multi-arch support.

Demos/Host/LowLevel/MIDIHost/MIDIHost.c

@@ -59,12 +59,14 @@ int main(void)
 /** 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 */
 	Serial_Init(9600, false);
@@ -188,7 +190,7 @@ void MIDIHost_Task(void)
 																				   MIDIEvent.Data2, MIDIEvent.Data3);
 		}
 	}
-	
+
 	Pipe_Freeze();
 
 	Pipe_SelectPipe(MIDI_DATA_OUT_PIPE);