BugID:21619447:[ota]modify linkkit related include
#include "ota_hal_common.h"
#if (OTA_SIGNAL_CHANNEL) == 2
-#include "coap_api.h"
+#include "linkkit/coap_api.h"
#else
-#include "mqtt_api.h"
+#include "linkkit/mqtt_api.h"
#endif
#if !defined (AOS_COMP_OTA_BLE)
