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/bl2/bl2.h b/include/bl2/bl2.h
index 89ff06e..f2bd07e 100644
--- a/include/bl2/bl2.h
+++ b/include/bl2/bl2.h
@@ -7,6 +7,9 @@
 #ifndef BL2_H__
 #define BL2_H__
 
+struct entry_point_info;
+
 void bl2_main(void);
+struct entry_point_info *bl2_load_images(void);
 
 #endif /* BL2_H__ */