More endianness porting of the LUFA device mode class drivers.

Add endianness information to the class driver and core structure definitions.

Move out the unused Ethernet_Frame_Info_t structure definition to the RNDIS device demos where it is needed.

LUFA/Drivers/USB/Class/Device/CDC.c

@@ -276,9 +276,9 @@ void CDC_Device_SendControlLineStateChange(USB_ClassInfo_CDC_Device_t* const CDC
 		{
 			.bmRequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),
 			.bRequest      = CDC_NOTIF_SerialState,
-			.wValue        = 0,
-			.wIndex        = 0,
-			.wLength       = sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost),
+			.wValue        = CPU_TO_LE16(0),
+			.wIndex        = CPU_TO_LE16(0),
+			.wLength       = CPU_TO_LE16(sizeof(CDCInterfaceInfo->State.ControlLineStates.DeviceToHost)),
 		};
 
 	Endpoint_Write_Stream_LE(&Notification, sizeof(USB_Request_Header_t), NULL);