Fix MISRA rule 8.4 Part 3

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 SPD=tspd all

Change-Id: I0a16cf68fef29cf00ec0a52e47786f61d02ca4ae
Signed-off-by: Roberto Vargas <roberto.vargas@arm.com>
diff --git a/plat/arm/board/fvp/fvp_private.h b/plat/arm/board/fvp/fvp_private.h
index c5cd07d..16f10a2 100644
--- a/plat/arm/board/fvp/fvp_private.h
+++ b/plat/arm/board/fvp/fvp_private.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2016, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2014-2018, ARM Limited and Contributors. All rights reserved.
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -18,6 +18,7 @@
 void fvp_interconnect_init(void);
 void fvp_interconnect_enable(void);
 void fvp_interconnect_disable(void);
+void tsp_early_platform_setup(void);
 
 
 #endif /* __FVP_PRIVATE_H__ */