Fix MISRA rule 8.3 in common code

Rule 8.3: All declarations of an object or function shall
          use the same names and type qualifiers.

Change-Id: Iff384187c74a598a4e73f350a1893b60e9d16cec
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
diff --git a/include/common/bl_common.h b/include/common/bl_common.h
index 6a249f5..6571830 100644
--- a/include/common/bl_common.h
+++ b/include/common/bl_common.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2017, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2013-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -210,7 +210,7 @@
 
 #else
 
-uintptr_t page_align(uintptr_t, unsigned);
+uintptr_t page_align(uintptr_t value, unsigned dir);
 int load_image(meminfo_t *mem_layout,
 	       unsigned int image_id,
 	       uintptr_t image_base,