feat(intel): restructure sys mgr for S10/N5X

This patch is to restructure system manager. Move platform dependent
MACROs to individual platform system manager. Common system manager will
remain for those common declaration only.

Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
Change-Id: I385455671413e154d04a879d33fdd774fcfefbd6
diff --git a/plat/intel/soc/stratix10/include/s10_clock_manager.h b/plat/intel/soc/stratix10/include/s10_clock_manager.h
index 661e204..5f76375 100644
--- a/plat/intel/soc/stratix10/include/s10_clock_manager.h
+++ b/plat/intel/soc/stratix10/include/s10_clock_manager.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2022, Intel Corporation. All rights reserved.
+ * Copyright (c) 2019-2023, Intel Corporation. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,6 +7,7 @@
 #ifndef __CLOCKMANAGER_H__
 #define __CLOCKMANAGER_H__
 
+#include "s10_system_manager.h"
 #include "socfpga_handoff.h"
 
 #define ALT_CLKMGR				0xffd10000