Use ARM CCI driver on FVP and Juno platforms

This patch updates the FVP and Juno platform ports to use the common
driver for ARM Cache Coherent Interconnects.

Change-Id: Ib142f456b9b673600592616a2ec99e9b230d6542
diff --git a/plat/juno/juno_private.h b/plat/juno/juno_private.h
index 9a5944c..afb1bfc 100644
--- a/plat/juno/juno_private.h
+++ b/plat/juno/juno_private.h
@@ -154,6 +154,7 @@
 unsigned long platform_get_stack(unsigned long mpidr);
 uint64_t plat_get_syscnt_freq(void);
 void plat_gic_init(void);
+void plat_cci_init(void);
 
 /* Declarations for plat_topology.c */
 int plat_setup_topology(void);