support aliyun sdk on TencentOS tiny

sample: examples\aliyun_iotkit_csdk_mqtt
project: board\TencentOS_tiny_EVB_MX_Plus\KEIL\aliyun_iotkit_csdk_mqtt

components/connectivity/iotkit-embedded-3.0.1/3rdparty/src/dev_model/dm_cota.h

@@ -0,0 +1,20 @@
+/*
+ * Copyright (C) 2015-2018 Alibaba Group Holding Limited
+ */
+
+
+
+#ifndef _DM_COTA_H_
+#define _DM_COTA_H_
+
+typedef struct {
+    int is_report_new_config;
+} dm_cota_ctx_t;
+
+int dm_cota_init(void);
+int dm_cota_deinit(void);
+int dm_cota_perform_sync(_OU_ char *output, _IN_ int output_len);
+int dm_cota_get_config(const char *config_scope, const char *get_type, const char *attribute_keys);
+int dm_cota_status_check(void);
+
+#endif