add ASFv4 M2M (memory-to-memory DMA) middleware

This is form Atmel Start and provides functionality for hardware-based
DMA copies from memory to memory.

Change-Id: Ib07755b2c5974af70817f5460fb0f358c631452a
diff --git a/sysmoOCTSIM/atmel_start.h b/sysmoOCTSIM/atmel_start.h
index 92afa47..4892cbd 100644
--- a/sysmoOCTSIM/atmel_start.h
+++ b/sysmoOCTSIM/atmel_start.h
@@ -5,10 +5,15 @@
 extern "C" {
 #endif
 
+#include <dma_memory.h>
+
 #include "driver_init.h"
 #include "usb_start.h"
 #include "stdio_start.h"
 
+/** flag set when the memory to memory DMA is complete */
+volatile bool dma_m2m_complete_flag;
+
 /**
  * Initializes MCU, drivers and middleware in the project
  **/