Add MAX_ENDPOINT_INDEX compile time option for the XMEGA devices.

LUFA/CodeTemplates/LUFAConfig.h

@@ -117,6 +117,7 @@
 //		#define DEVICE_STATE_AS_GPIOR            {Insert Value Here}
 //		#define FIXED_NUM_CONFIGURATIONS         {Insert Value Here}
 //		#define CONTROL_ONLY_DEVICE
+// 		#define MAX_ENDPOINT_INDEX               {Insert Value Here}
 //		#define NO_DEVICE_REMOTE_WAKEUP
 //		#define NO_DEVICE_SELF_POWER
 

LUFA/DoxygenPages/CompileTimeTokens.txt

@@ -168,6 +168,10 @@
  *    is through control endpoint requests. Defining this token will remove several features related to the selection and control of device
  *    endpoints internally, saving space. Generally, this is usually only useful in (some) bootloaders and is best avoided.
  *
+ *  - <b>MAX_ENDPOINT_INDEX</b> - (\ref Group_Device) - <i>XMEGA Only</i> \n
+ *    Defining this value to the highest index (not address - this excludes the direction flag) endpoint within the device will restrict the
+ *    number of FIFOs created internally for the endpoint buffers, reducing the total RAM usage.
+ *
  *  - <b>INTERRUPT_CONTROL_ENDPOINT</b> - (\ref Group_USBManagement) - <i>All Architectures</i> \n
  *    Some applications prefer to not call the USB_USBTask() management task regularly while in device mode, as it can complicate code significantly.
  *    Instead, when device mode is used this token can be passed to the library via the -D switch to allow the library to manage the USB control

LUFA/Drivers/USB/Core/XMEGA/Endpoint_XMEGA.h

@@ -90,14 +90,18 @@
 
 	/* Public Interface - May be used in end-application: */
 		/* Macros: */
-			#if !defined(CONTROL_ONLY_DEVICE) || defined(__DOXYGEN__)
+			#if (!defined(MAX_ENDPOINT_INDEX) && !defined(CONTROL_ONLY_DEVICE)) || defined(__DOXYGEN__)
 				/** Total number of endpoints (including the default control endpoint at address 0) which may
 				 *  be used in the device. Different USB AVR models support different amounts of endpoints,
 				 *  this value reflects the maximum number of endpoints for the currently selected AVR model.
 				 */
 				#define ENDPOINT_TOTAL_ENDPOINTS            16
 			#else
+				#if defined(CONTROL_ONLY_DEVICE)
 					#define ENDPOINT_TOTAL_ENDPOINTS        1
+				#else
+					#define ENDPOINT_TOTAL_ENDPOINTS        (MAX_ENDPOINT_INDEX + 1)
+				#endif
 			#endif
 
 	/* Private Interface - For use in library only: */