ARM: uniphier: refactor SBC init code

Merge sbc-admulti.c and sbc-savepin.c into a single file to avoid
code duplication.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/sbc/sbc-pxs2.c b/arch/arm/mach-uniphier/sbc/sbc-pxs2.c
index acbf4c5..342a086 100644
--- a/arch/arm/mach-uniphier/sbc/sbc-pxs2.c
+++ b/arch/arm/mach-uniphier/sbc/sbc-pxs2.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2015-2016 Masahiro Yamada <yamada.masahiro@socionext.com>
+ * Copyright (C) 2016-2017 Socionext Inc.
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
@@ -9,11 +9,11 @@
 #include "../init.h"
 #include "sbc-regs.h"
 
-int uniphier_pxs2_sbc_init(const struct uniphier_board_data *bd)
+void uniphier_pxs2_sbc_init(void)
 {
+	uniphier_sbc_init_savepin();
+
 	/* necessary for ROM boot ?? */
 	/* system bus output enable */
 	writel(0x17, PC0CTRL);
-
-	return 0;
 }