MdePkg: BaseRngLibDxe: Add RngLib that uses RngDxe

This adds a RngLib that uses the RngProtocol to provide randomness.
This means that the RngLib is meant to be used with DXE_DRIVERS.

Ref: https://github.com/tianocore/edk2/pull/845
Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=1871

Cc: Ard Biesheuvel <ard.biesheuvel@arm.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Zhiguang Liu <zhiguang.liu@intel.com>

Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
Signed-off-by: Matthew Carlson <matthewfcarlson@gmail.com>

MdePkg/Library/DxeRngLib/DxeRngLib.inf

@@ -0,0 +1,38 @@
+# @file
+# Provides implementation of the library class RngLib that uses the RngProtocol
+#
+# @copyright
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# SPDX-License-Identifier: BSD-2-Clause-Patent
+#
+##
+
+[Defines]
+  INF_VERSION     = 1.27
+  BASE_NAME       = DxeRngLib
+  MODULE_UNI_FILE = DxeRngLib.uni
+  FILE_GUID       = FF9F84C5-A33E-44E3-9BB5-0D654B2D4149
+  MODULE_TYPE     = DXE_DRIVER
+  VERSION_STRING  = 1.0
+  LIBRARY_CLASS   = RngLib|DXE_DRIVER UEFI_APPLICATION UEFI_DRIVER
+
+[Packages]
+  MdePkg/MdePkg.dec
+
+[Sources]
+  DxeRngLib.c
+
+[LibraryClasses]
+  DebugLib
+  UefiBootServicesTableLib
+
+[Protocols]
+  gEfiRngProtocolGuid                 ## CONSUMES
+
+[Depex]
+  gEfiRngProtocolGuid
+
+[Guids]
+  gEfiRngAlgorithmSp80090Ctr256Guid
+  gEfiRngAlgorithmSp80090Hash256Guid
+  gEfiRngAlgorithmSp80090Hmac256Guid