MLECO-2917 Replacing platform CMake definitions with headers

Moving away from CMake description of targets and generation of
platform header files (for memory addresses and IRQ numbers).
Instead these headers are part of the repository under their
respective platform-driver packages under HAL sources.

Change-Id: I9bd3e68eb17385f8b93eb3d8d76b212ce0e1a6d5
Signed-off-by: Kshitij Sisodia <kshitij.sisodia@arm.com>
diff --git a/source/hal/source/platform/simple/include/peripheral_irqs.h b/source/hal/source/platform/simple/include/peripheral_irqs.h
new file mode 100644
index 0000000..9ffc675
--- /dev/null
+++ b/source/hal/source/platform/simple/include/peripheral_irqs.h
@@ -0,0 +1,27 @@
+/*
+ * 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 PERIPHERAL_IRQS_H
+#define PERIPHERAL_IRQS_H
+
+/******************************************************************************/
+/*                    Peripheral interrupt numbers                            */
+/******************************************************************************/
+
+#define EthosU_IRQn                (56)   /* Ethos-Uxx Interrupt */
+
+#endif /* PERIPHERAL_IRQS_H */