ArmPkg/CpuPei: Implement the memory attributes PPI

Implement the newly defined PPI that permits the PEI core and DXE IPL to
manage memory permissions on ranges of DRAM, for doing things like
mapping the stack non-executable, or granting executable permissions to
shadowed PEIMs.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Oliver Smith-Denny <osde@linux.microsoft.com>
Reviewed-by: Michael Kubacki <michael.kubacki@microsoft.com>

ArmPkg/Drivers/CpuPei/CpuPei.inf

@@ -3,6 +3,7 @@
 #
 # This module provides platform specific function to detect boot mode.
 # Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
+# Copyright (c) 2023, Google, LLC. All rights reserved.<BR>
 #
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
 #
@@ -28,6 +29,7 @@
   CpuPei.c
 
 [Packages]
+  MdeModulePkg/MdeModulePkg.dec
   MdePkg/MdePkg.dec
   EmbeddedPkg/EmbeddedPkg.dec
   ArmPkg/ArmPkg.dec
@@ -37,9 +39,11 @@
   DebugLib
   HobLib
   ArmLib
+  ArmMmuLib
 
 [Ppis]
   gArmMpCoreInfoPpiGuid
+  gEdkiiMemoryAttributePpiGuid
 
 [Guids]
   gArmMpCoreInfoGuid