UefiPayloadPkg: Fix ECC reported issues

V2: Fix more header files on #ifdef variable

ECC reported some issues on UefiPayloadPkg, this patch fixed
most of them except several files including ElfLib\Elf32.h,
coreboot.h, CbParseLib.c, etc.
It also removed unused functions in ResetSystemLib and Hob.c.

Signed-off-by: Guo Dong <guo.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Benjamin You <benjamin.you@intel.com>
Reviewed-by: Maurice Ma <maurice.ma@intel.com>

UefiPayloadPkg/Include/Library/PlatformSupportLib.h

@@ -8,8 +8,8 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
 
 **/
 
-#ifndef __BOOTLOADER_PLATFORM_SUPPORT_LIB__
-#define __BOOTLOADER_PLATFORM_SUPPORT_LIB__
+#ifndef BOOTLOADER_PLATFORM_SUPPORT_LIB_
+#define BOOTLOADER_PLATFORM_SUPPORT_LIB_
 
 /**
   Parse platform specific information from bootloader