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_bl31_setup.c b/plat/socionext/uniphier/uniphier_bl31_setup.c
index 15ceed4..f2f0b29 100644
--- a/plat/socionext/uniphier/uniphier_bl31_setup.c
+++ b/plat/socionext/uniphier/uniphier_bl31_setup.c
@@ -86,6 +86,6 @@
 
 void bl31_plat_arch_setup(void)
 {
-	uniphier_mmap_setup();
+	uniphier_mmap_setup(uniphier_soc);
 	enable_mmu_el3(0);
 }