MdeModulePkg/Bus/Pci/PciBusDxe: Support PCIe Resizable BAR Capability

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=313

Add PcdPcieResizableBarSupport to enable/disable PCIe Resizable
BAR Capability fearture.
Program the Resizable BAR Register if the device suports PCIe Resizable
BAR Capability and PcdPcieResizableBarSupport is TRUE.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Signed-off-by: Heng Luo <heng.luo@intel.com>
Reviewed-by: Ray Ni <ray.ni@intel.com>

MdeModulePkg/Bus/Pci/PciBusDxe/PciEnumeratorSupport.h

@@ -1,7 +1,7 @@
 /** @file
   PCI enumeration support functions declaration for PCI Bus module.
 
-Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
+Copyright (c) 2006 - 2021, Intel Corporation. All rights reserved.<BR>
 SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
@@ -467,4 +467,14 @@ DumpPpbPaddingResource (
   IN PCI_BAR_TYPE                     ResourceType
   );
 
+/**
+  Dump the PCI BAR information.
+
+  @param PciIoDevice     PCI IO instance.
+**/
+VOID
+DumpPciBars (
+  IN PCI_IO_DEVICE                    *PciIoDevice
+  );
+
 #endif