OvmfPkg/PciHostBridgeLib: consolidate #includes and INF file sections

- In every C file, list every necessary public #include individually, with
  an example identifier that's actually consumed.

- Place all public #includes first, all module-private #includes second.
  Separate them with a single empty line. Keep each section sorted in
  itself.

- Sort all sections in the INF file, except [Defines].

- Add unlisted lib classes.

- Remove unnecessary #include directives, add unlisted #include
  directives.

Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Julien Grall <julien@xen.org>
Cc: Philippe Mathieu-Daudé <philmd@redhat.com>
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2122
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20210526201446.12554-29-lersek@redhat.com>
Reviewed-by: Ard Biesheuvel <ardb@kernel.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>

OvmfPkg/Library/PciHostBridgeLib/PciHostBridgeLib.inf

@@ -25,9 +25,9 @@
 #
 
 [Sources]
+  PciHostBridge.h
   PciHostBridgeLib.c
   XenSupport.c
-  PciHostBridge.h
 
 [Packages]
   MdeModulePkg/MdeModulePkg.dec
@@ -35,6 +35,7 @@
   OvmfPkg/OvmfPkg.dec
 
 [LibraryClasses]
+  BaseLib
   BaseMemoryLib
   DebugLib
   MemoryAllocationLib
@@ -43,11 +44,11 @@
   PciLib
 
 [Pcd]
+  gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration
+  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId
   gUefiOvmfPkgTokenSpaceGuid.PcdPciIoBase
   gUefiOvmfPkgTokenSpaceGuid.PcdPciIoSize
   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Base
   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio32Size
   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Base
   gUefiOvmfPkgTokenSpaceGuid.PcdPciMmio64Size
-  gUefiOvmfPkgTokenSpaceGuid.PcdOvmfHostBridgePciDevId
-  gEfiMdeModulePkgTokenSpaceGuid.PcdPciDisableBusEnumeration