ArmPlatformPkg/PrePeiCore: Invoke constructors for SEC phase

On platforms that do not have the serial console port pre-initialized
prior to the SEC phase and due to the absence of a call to
"SerialPortInitialize", this results in missing debug logs. So, call
the auto-generated "ProcessLibraryConstructorList" function from SEC
phase to have all the dependent library constructors called
(this includes a call to "SerialPortInitialize").

Signed-off-by: Rohit Mathew <rohit.mathew@arm.com>
Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>

ArmPlatformPkg/PrePeiCore/PrePeiCore.h

@@ -1,7 +1,7 @@
 /** @file
   Main file supporting the transition to PEI Core in Normal World for Versatile Express
 
-  Copyright (c) 2011, ARM Limited. All rights reserved.
+  Copyright (c) 2011 - 2022, ARM Limited. All rights reserved.
 
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
@@ -73,4 +73,14 @@ PeiCommonExceptionEntry (
   IN UINTN   LR
   );
 
+/*
+ * Autogenerated function that calls the library constructors for all of the
+ * module's dependent libraries.
+ */
+VOID
+EFIAPI
+ProcessLibraryConstructorList (
+  VOID
+  );
+
 #endif