uniphier: make I/O register region configurable

The I/O register region will be changed in the next SoC. Make it
configurable.

Change-Id: Iec0cbd1ef2d0703ebc7c3d3082edd73791bbfec9
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/plat/socionext/uniphier/uniphier.h b/plat/socionext/uniphier/uniphier.h
index b26bd65..ee520ad 100644
--- a/plat/socionext/uniphier/uniphier.h
+++ b/plat/socionext/uniphier/uniphier.h
@@ -57,7 +57,7 @@
 void uniphier_scp_system_off(void);
 void uniphier_scp_system_reset(void);
 
-void uniphier_mmap_setup(void);
+void uniphier_mmap_setup(unsigned int soc);
 
 void uniphier_cci_init(unsigned int soc);
 void uniphier_cci_enable(void);