Bluetooth: BT_L2CAP_stack_certification

Stack certification changes for L2CAP.

Conflicts:
	include/hardware/bluetooth.h

Change-Id: Idc54af2b19c7e421bde044f205842d6ca30b8187
diff --git a/include/hardware/bluetooth.h b/include/hardware/bluetooth.h
index 08f603d..66cd912 100644
--- a/include/hardware/bluetooth.h
+++ b/include/hardware/bluetooth.h
@@ -550,6 +550,8 @@
      */
     int (*config_clear)(void);
 
+    /** BT stack Test interface */
+    const void* (*get_testapp_interface)(int test_app_profile);
 } bt_interface_t;
 
 /** TODO: Need to add APIs for Service Discovery, Service authorization and