添加rtthread相关代码

riscv/rtthread/components/net/at/include/at_log.h

@@ -0,0 +1,27 @@
+/*
+ * Copyright (c) 2006-2021, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2018-10-12     armink       first version
+ */
+
+/*
+ * NOTE: DO NOT include this file on the header file.
+ */
+
+#ifndef LOG_TAG
+#define DBG_TAG               "at"
+#else
+#define DBG_TAG               LOG_TAG
+#endif /* LOG_TAG */
+
+#ifdef AT_DEBUG
+#define DBG_LVL               DBG_LOG
+#else
+#define DBG_LVL               DBG_INFO
+#endif /* AT_DEBUG */
+
+#include <rtdbg.h>