建立工程，成功创建两个虚拟串口

source/OpenAMP/libmetal/lib/processor/arm/cpu.h

@@ -0,0 +1,17 @@
+/*
+ * Copyright (c) 2015, Xilinx Inc. and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+/*
+ * @file	cpu.h
+ * @brief	CPU specific primatives
+ */
+
+#ifndef __METAL_ARM_CPU__H__
+#define __METAL_ARM_CPU__H__
+
+#define metal_cpu_yield()
+
+#endif /* __METAL_ARM_CPU__H__ */