lib: aarch64: misc_helpers: include bl_common.h

This patch includes bl_common.h to get access to the linker
defined symbols.

Change-Id: I9aa4a6e730273d75a53438854f69971e485bc904
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>

lib/aarch64/misc_helpers.S

 /*
- * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2019, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,6 +7,7 @@
 #include <arch.h>
 #include <asm_macros.S>
 #include <assert_macros.S>
+#include <common/bl_common.h>
 #include <lib/xlat_tables/xlat_tables_defs.h>
 
 #if !ERROR_DEPRECATED
@@ -24,9 +25,7 @@
 	.globl	disable_mmu_el3
 	.globl	disable_mmu_icache_el1
 	.globl	disable_mmu_icache_el3
-
 	.globl	fixup_gdt_reloc
-
 #if SUPPORT_VFP
 	.globl	enable_vfp
 #endif