ArmPkg: Fix data type used for GicDistributorBase

The data type used by variables representing the GicDistributorBase has
been inconsistently used in the ArmGic driver and the library.  The PCD
defined for the GIC Distributor base address is UINT64.  However, the
data types for the variables used is UINTN, INTN, and at some places
UINT32.

Therefore, update the data types to use UINTN and add necessary
typecasts when reading values from the PCD. This should then be
consistent across AArch32 and AArch64 builds.

Signed-off-by: Sami Mujawar <sami.mujawar@arm.com>

ArmPkg/Include/Library/ArmGicLib.h

@@ -1,6 +1,6 @@
 /** @file
 *
-*  Copyright (c) 2011-2021, Arm Limited. All rights reserved.<BR>
+*  Copyright (c) 2011-2023, Arm Limited. All rights reserved.<BR>
 *
 *  SPDX-License-Identifier: BSD-2-Clause-Patent
 *
@@ -121,7 +121,7 @@ VOID
 EFIAPI
 ArmGicSetupNonSecure (
   IN  UINTN  MpId,
-  IN  INTN   GicDistributorBase,
+  IN  UINTN  GicDistributorBase,
   IN  INTN   GicInterruptInterfaceBase
   );
 
@@ -148,28 +148,28 @@ ArmGicDisableInterruptInterface (
 VOID
 EFIAPI
 ArmGicEnableDistributor (
-  IN  INTN  GicDistributorBase
+  IN  UINTN  GicDistributorBase
   );
 
 VOID
 EFIAPI
 ArmGicDisableDistributor (
-  IN  INTN  GicDistributorBase
+  IN  UINTN  GicDistributorBase
   );
 
 UINTN
 EFIAPI
 ArmGicGetMaxNumInterrupts (
-  IN  INTN  GicDistributorBase
+  IN  UINTN  GicDistributorBase
   );
 
 VOID
 EFIAPI
 ArmGicSendSgiTo (
-  IN  INTN  GicDistributorBase,
-  IN  INTN  TargetListFilter,
-  IN  INTN  CPUTargetList,
-  IN  INTN  SgiId
+  IN  UINTN  GicDistributorBase,
+  IN  INTN   TargetListFilter,
+  IN  INTN   CPUTargetList,
+  IN  INTN   SgiId
   );
 
 /*
@@ -251,7 +251,7 @@ VOID
 EFIAPI
 ArmGicV2SetupNonSecure (
   IN  UINTN  MpId,
-  IN  INTN   GicDistributorBase,
+  IN  UINTN  GicDistributorBase,
   IN  INTN   GicInterruptInterfaceBase
   );