Remove platform dependency in CCI-400 driver

* Create cci_init() function in CCI-400 driver to allow platform
  to provide arguments needed by the driver (i.e. base address
  and cluster indices for the ACE slave interfaces).

* Rename cci_(en|dis)able_coherency to
  cci_(en|dis)able_cluster_coherency to make it clear that
  the driver only enables/disables the coherency of CPU
  clusters and not other devices connected to the CCI-400.

* Update FVP port to use new cci_init() function and remove
  unnecessary CCI defintions from platform_def.h. Also rename
  fvp_cci_setup() to fvp_cci_enable() to more clearly
  differentiate between CCI initialization and enabling.

THIS CHANGE REQUIRES PLATFORM PORTS THAT USE THE CCI-400 DRIVER
TO BE UPDATED

Fixes ARM-software/tf-issues#168

Change-Id: I1946a51409b91217b92285b6375082619f607fec
diff --git a/plat/fvp/include/plat_macros.S b/plat/fvp/include/plat_macros.S
index 727b958..5d11d36 100644
--- a/plat/fvp/include/plat_macros.S
+++ b/plat/fvp/include/plat_macros.S
@@ -30,7 +30,7 @@
 #include <cci400.h>
 #include <gic_v2.h>
 #include <plat_config.h>
-#include "platform_def.h"
+#include "../fvp_def.h"
 
 .section .rodata.gic_reg_name, "aS"
 gic_regs: