Fix MISRA rule 8.4 Part 1

Rule 8.4: A compatible declaration shall be visible when
          an object or function with external linkage is defined

Fixed for:
	make DEBUG=1 PLAT=fvp LOG_LEVEL=50 all

Change-Id: I7c2ad3f5c015411c202605851240d5347e4cc8c7
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
diff --git a/include/common/bl_common.h b/include/common/bl_common.h
index 6571830..4ef916f 100644
--- a/include/common/bl_common.h
+++ b/include/common/bl_common.h
@@ -210,7 +210,6 @@
 
 #else
 
-uintptr_t page_align(uintptr_t value, unsigned dir);
 int load_image(meminfo_t *mem_layout,
 	       unsigned int image_id,
 	       uintptr_t image_base,
@@ -230,6 +229,7 @@
 extern const char version_string[];
 
 void print_entry_point_info(const entry_point_info_t *ep_info);
+uintptr_t page_align(uintptr_t value, unsigned dir);
 
 #endif /*__ASSEMBLY__*/