Add support for triple endpoint/pipe bank AVR32 UC3 devices.

LUFA/Drivers/USB/Core/UC3/Endpoint_UC3.h

@@ -190,6 +190,17 @@
 			 *  accesses the second bank.
 			 */
 			#define ENDPOINT_BANK_DOUBLE                    AVR32_USBB_UECFG0_EPBK_DOUBLE
+
+			#if defined(USB_SERIES_UC3A3_AVR32) || defined(USB_SERIES_UC3A4_AVR32) || defined(__DOXYGEN__)
+				/** Mask for the bank mode selection for the \ref Endpoint_ConfigureEndpoint() macro. This indicates
+				 *  that the endpoint should have three banks, which requires more USB FIFO memory but results
+				 *  in faster transfers as one USB device (the AVR or the host) can access one bank while the other
+				 *  accesses the remaining banks.
+				 *
+				 *  \note Not available on all AVR models.
+				 */
+				#define ENDPOINT_BANK_TRIPLE                AVR32_USBB_UECFG0_EPBK_TRIPLE
+			#endif
 			//@}
 
 			#if (!defined(FIXED_CONTROL_ENDPOINT_SIZE) || defined(__DOXYGEN__))

LUFA/Drivers/USB/Core/UC3/Pipe_UC3.h

@@ -161,6 +161,17 @@
 			 *  bank.
 			 */
 			#define PIPE_BANK_DOUBLE                AVR32_USBB_UPCFG0_PBK_DOUBLE
+
+			#if defined(USB_SERIES_UC3A3_AVR32) || defined(USB_SERIES_UC3A4_AVR32) || defined(__DOXYGEN__)
+				/** Mask for the bank mode selection for the \ref Pipe_ConfigurePipe() macro. This indicates that the
+				 *  pipe should have three banks, which requires more USB FIFO memory but results in faster transfers
+				 *  as one USB device (the AVR or the attached device) can access one bank while the other accesses the
+				 *  remaining banks.
+				 *
+				 *  \note Not available on all AVR models.
+				 */
+				#define PIPE_BANK_TRIPLE           AVR32_USBB_UPCFG0_PBK_TRIPLE
+			#endif
 			//@}
 
 			/** Default size of the default control pipe's bank, until altered by the Endpoint0Size value

LUFA/Drivers/USB/Core/UC3/USBController_UC3.h

@@ -298,7 +298,7 @@
 	/* Private Interface - For use in library only: */
 	#if !defined(__DOXYGEN__)
 		/* Macros: */			
-			#if (defined(USB_SERIES_UC3A3_AVR32) || defined(USB_SERIES_UC3A4_AVR32))
+			#if defined(USB_SERIES_UC3A3_AVR32) || defined(USB_SERIES_UC3A4_AVR32)
 				#define USB_CLOCK_REQUIRED_FREQ  12000000UL
 			#else
 				#define USB_CLOCK_REQUIRED_FREQ  48000000UL