Merge pull request #10874 from ganesh-ramachandran/m3h6_newfeatures

Add new features to Toshiba's TMPM3H6

Author: 0xc0170

targets/TARGET_TOSHIBA/TARGET_TMPM3H6/device.h

@@ -16,7 +16,8 @@
 #ifndef MBED_DEVICE_H
 #define MBED_DEVICE_H
 
-#define DEVICE_ID_LENGTH       32
+#define DEVICE_ID_LENGTH              32
+#define TRANSACTION_QUEUE_SIZE_SPI    4
 
 #include "objects.h"