MLECO-2984: Refactor components

* Use UART component from Ethos-U core-platform
* Components as cmake project

Change-Id: I053f3a59800abc20216e6a4df8555db357e3f21d
Signed-off-by: Isabella Gottardi <isabella.gottardi@arm.com>
diff --git a/source/hal/platform/mps3/source/device_mps3.h b/source/hal/platform/mps3/source/device_mps3.h
new file mode 100644
index 0000000..9447c07
--- /dev/null
+++ b/source/hal/platform/mps3/source/device_mps3.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2022 Arm Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef DEVICE_MPS3_H
+#define DEVICE_MPS3_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdint.h>
+
+/**
+ * @brief   Gets the core clock set for MPS3.
+ * @return  Clock value in Hz.
+ **/
+uint32_t GetMPS3CoreClock(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* DEVICE_MPS3_H */