Fix compile errors in the UC3 platform support due to a forward reference and an incorrect function prototype.

LUFA/Platform/UC3/ClockManagement.h

@@ -127,10 +127,10 @@
 			 *
 			 *  \return Boolean \c true if the external oscillator was successfully started, \c false if invalid parameters specified.
 			 */
-			static inline void AVR32CLK_StartExternalOscillator(const uint8_t Channel,
+			static inline uint8_t AVR32CLK_StartExternalOscillator(const uint8_t Channel,
 			                                                       const uint8_t Type,
 			                                                       const uint8_t Startup) ATTR_ALWAYS_INLINE;
-			static inline void AVR32CLK_StartExternalOscillator(const uint8_t Channel,
+			static inline uint8_t AVR32CLK_StartExternalOscillator(const uint8_t Channel,
 			                                                       const uint8_t Type,
 			                                                       const uint8_t Startup)
 			{

LUFA/Platform/UC3/InterruptManagement.h

@@ -84,6 +84,9 @@
 
 	/* Private Interface - For use in library only: */
 	#if !defined(__DOXYGEN__)
+		/* Type Defines: */
+			typedef void (*InterruptHandlerPtr_t)(void);
+
 		/* External Variables: */
 			extern const void            EVBA_Table;
 			extern const uint32_t        Autovector_Table[];
@@ -108,10 +111,6 @@
 			 */
 			#define INTC_IRQ_LINE(IRQIndex)   (IRQIndex % 32)
 
-		/* Type Defines: */
-			/** Type define for an interrupt handler ISR function. */
-			typedef void (*InterruptHandlerPtr_t)(void);
-
 		/* Function Prototypes: */
 			/** Initializes the interrupt controller, nulling out all interrupt handlers ready for new registration. This
 			 *  function should be called once on startup to ensure the interrupt controller is ready for use.