OvmfPkg/Csm/LegacyBootManagerLib: Update to make it build for OVMF

REF:https://bugzilla.tianocore.org/show_bug.cgi?id=1811

This commit will update the library's INF file to:

A) Assign a new file GUID;
B) Remove the IntelFramework[Module]Pkg DEC file dependency.

Please note that a subsequent commit (final patch of the series) will:

Replace the use of LegacyBootManagerLib in IntelFrameworkModulePkg with
the one copied in OvmfPkg within DSC files.

Cc: Ray Ni <ray.ni@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Hao A Wu <hao.a.wu@intel.com>
Reviewed-by: David Woodhouse <dwmw2@infradead.org>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

OvmfPkg/Csm/LegacyBootManagerLib/LegacyBootManagerLib.inf

@@ -1,7 +1,7 @@
 ## @file
 #  Legacy Boot Manager module is library for BDS phase.
 #
-#  Copyright (c) 2011 - 2018, Intel Corporation. All rights reserved.<BR>
+#  Copyright (c) 2011 - 2019, Intel Corporation. All rights reserved.<BR>
 #  SPDX-License-Identifier: BSD-2-Clause-Patent
 #
 ##
@@ -10,7 +10,7 @@
   INF_VERSION                    = 0x00010005
   BASE_NAME                      = LegacyBootManagerLib
   MODULE_UNI_FILE                = LegacyBootManagerLib.uni
-  FILE_GUID                      = F1B87BE4-0ACC-409A-A52B-7BFFABCC96A0
+  FILE_GUID                      = D1BBB810-6A9E-40E0-87CB-65EAD2AA2A09
   MODULE_TYPE                    = DXE_DRIVER
   VERSION_STRING                 = 1.0
   LIBRARY_CLASS                  = NULL|DXE_DRIVER UEFI_APPLICATION
@@ -29,8 +29,7 @@
 [Packages]
   MdePkg/MdePkg.dec
   MdeModulePkg/MdeModulePkg.dec
-  IntelFrameworkPkg/IntelFrameworkPkg.dec
+  OvmfPkg/OvmfPkg.dec
-  IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
 
 [LibraryClasses]
   BaseLib