ARM: uniphier: call uniphier_get_board_param() without FDT blob

Move "gd->fdt_blob" from the caller to the callee so that this
function can be used more easily.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/init/init.c b/arch/arm/mach-uniphier/init/init.c
index bbfc8e5..eda169e 100644
--- a/arch/arm/mach-uniphier/init/init.c
+++ b/arch/arm/mach-uniphier/init/init.c
@@ -9,13 +9,11 @@
 #include <mach/init.h>
 #include <mach/soc_info.h>
 
-DECLARE_GLOBAL_DATA_PTR;
-
 void spl_board_init(void)
 {
 	const struct uniphier_board_data *param;
 
-	param = uniphier_get_board_param(gd->fdt_blob);
+	param = uniphier_get_board_param();
 	if (!param)
 		hang();