ARM: uniphier: add more init code for PXs3

Add the boot device table and reset deassertion for eMMC.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/clk/clk-pxs3.c b/arch/arm/mach-uniphier/clk/clk-pxs3.c
new file mode 100644
index 0000000..2dee857
--- /dev/null
+++ b/arch/arm/mach-uniphier/clk/clk-pxs3.c
@@ -0,0 +1,17 @@
+/*
+ * Copyright (C) 2017 Socionext Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <linux/io.h>
+
+#include "../init.h"
+
+#define SDCTRL_EMMC_HW_RESET	0x59810280
+
+void uniphier_pxs3_clk_init(void)
+{
+	/* TODO: use "mmc-pwrseq-emmc" */
+	writel(1, SDCTRL_EMMC_HW_RESET);
+}