ArmVirtPkg: Add varpolicy shell command

Adds the varpolicy EFI shell command to all DSC files that
currently include other dynamic shell commands from ShellPkg.

This command allows variable policies to be dumped in the EFI
shell for convenient auditing and debug.

Use the command in the EFI shell as follows:

- `"varpolicy"` dumps platform variables
- `"varpolicy -?"` shows help text
- `"varpolicy -b"` pages output as expected
- `"varpolicy -s"` shows accurate variable statistic information
- `"varpolicy -p"` shows accurate UEFI variable policy information
- `"varpolicy-v -b"` dumps all information including variable data hex dump

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Julien Grall <julien@xen.org>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Leif Lindholm <quic_llindhol@quicinc.com>
Cc: Sami Mujawar <sami.mujawar@arm.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Message-Id: <20231030203112.736-5-mikuback@linux.microsoft.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>

ArmVirtPkg/ArmVirt.dsc.inc

@@ -393,6 +393,10 @@
     <PcdsFixedAtBuild>
       gEfiShellPkgTokenSpaceGuid.PcdShellLibAutoInitialize|FALSE
   }
+  ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.inf {
+    <PcdsFixedAtBuild>
+      gEfiShellPkgTokenSpaceGuid.PcdShellLibAutoInitialize|FALSE
+  }
   OvmfPkg/LinuxInitrdDynamicShellCommand/LinuxInitrdDynamicShellCommand.inf {
     <PcdsFixedAtBuild>
       gEfiShellPkgTokenSpaceGuid.PcdShellLibAutoInitialize|FALSE

ArmVirtPkg/ArmVirtCloudHv.fdf

@@ -169,6 +169,7 @@ READ_LOCK_STATUS   = TRUE
   INF ShellPkg/Application/Shell/Shell.inf
   INF ShellPkg/DynamicCommand/TftpDynamicCommand/TftpDynamicCommand.inf
   INF ShellPkg/DynamicCommand/HttpDynamicCommand/HttpDynamicCommand.inf
+  INF ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.inf
   INF OvmfPkg/LinuxInitrdDynamicShellCommand/LinuxInitrdDynamicShellCommand.inf
 
   #

ArmVirtPkg/ArmVirtQemuFvMain.fdf.inc

@@ -103,6 +103,7 @@ READ_LOCK_STATUS   = TRUE
   INF ShellPkg/Application/Shell/Shell.inf
   INF ShellPkg/DynamicCommand/TftpDynamicCommand/TftpDynamicCommand.inf
   INF ShellPkg/DynamicCommand/HttpDynamicCommand/HttpDynamicCommand.inf
+  INF ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.inf
   INF OvmfPkg/LinuxInitrdDynamicShellCommand/LinuxInitrdDynamicShellCommand.inf
 
   #

ArmVirtPkg/ArmVirtXen.fdf

@@ -180,6 +180,7 @@ READ_LOCK_STATUS   = TRUE
   INF ShellPkg/Application/Shell/Shell.inf
   INF ShellPkg/DynamicCommand/TftpDynamicCommand/TftpDynamicCommand.inf
   INF ShellPkg/DynamicCommand/HttpDynamicCommand/HttpDynamicCommand.inf
+  INF ShellPkg/DynamicCommand/VariablePolicyDynamicCommand/VariablePolicyDynamicCommand.inf
   INF OvmfPkg/LinuxInitrdDynamicShellCommand/LinuxInitrdDynamicShellCommand.inf
 
   #