SecurityPkg: Integrate new RngLib into RngDxe

Use the new RngLib to provide the IA32/X64 random data for RngDxe.
Remove x86 specific functions from RdRand files.
Simplify RngDxe by using WriteUnaligned64 for all platforms.
Use GetRandomNumber128 in RngDxe to leverage 128 bit support provided
by some HW RNG devices.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Thomas Palmer <thomas.palmer@hpe.com>
Reviewed-by: Samer El-Haj-Mahmoud <elhaj@hpe.com>
Reviewed-by: Michael Kinney <michael.d.kinney@intel.com>
Reviewed-by: Chao Zhang <chao.b.zhang@intel.com>
Reviewed-by: Qin Long <qin.long@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@18591 6f19259b-4bc3-4df7-8a09-765794883524

SecurityPkg/RandomNumberGenerator/RngDxe/RngDxe.inf

@@ -9,6 +9,7 @@
 #  Secure Key technology.
 #
 #  Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR>
+#  (C) Copyright 2015 Hewlett Packard Enterprise Development LP<BR>
 #  This program and the accompanying materials
 #  are licensed and made available under the terms and conditions of the BSD License
 #  which accompanies this distribution. The full text of the license may be found at
@@ -41,16 +42,6 @@
   AesCore.c
   AesCore.h
 
-[Sources.IA32]
-  IA32/RdRandWord.c
-  IA32/AsmRdRand.asm
-  IA32/GccRdRand.c          | GCC
-
-[Sources.X64]
-  X64/RdRandWord.c
-  X64/AsmRdRand.asm
-  X64/GccRdRand.c           | GCC
-
 [Packages]
   MdePkg/MdePkg.dec
   SecurityPkg/SecurityPkg.dec
@@ -62,6 +53,7 @@
   DebugLib	
   UefiDriverEntryPoint
   TimerLib
+  RngLib
 
 [Guids]
   gEfiRngAlgorithmSp80090Ctr256Guid   ## SOMETIMES_PRODUCES    ## GUID        # Unique ID of the algorithm for RNG
@@ -77,4 +69,4 @@
   XCODE:*_*_*_CC_FLAGS = -mmmx -msse
 
 [UserExtensions.TianoCore."ExtraFiles"]
-  RngDxeExtra.uni
+  RngDxeExtra.uni