ARM: mach-shmobile: Use DT_MACHINE for mackerel

Use DT_MACHINE_START() on the sh7372 based mackerel board.

Also include a tiny DTS file to describe the board and update the
Kconfig dependencies to select CONFIG_USE_OF.

Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index c1ce813..0632239 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -75,7 +75,8 @@
 dtb-$(CONFIG_ARCH_U8500) += snowball.dtb
 dtb-$(CONFIG_ARCH_SHMOBILE) += emev2-kzm9d.dtb \
 	r8a7740-armadillo800eva.dtb \
-	sh73a0-kzm9g.dtb
+	sh73a0-kzm9g.dtb \
+	sh7372-mackerel.dtb
 dtb-$(CONFIG_ARCH_SPEAR13XX) += spear1310-evb.dtb \
 	spear1340-evb.dtb
 dtb-$(CONFIG_ARCH_SPEAR3XX)+= spear300-evb.dtb \
diff --git a/arch/arm/boot/dts/sh7372-mackerel.dts b/arch/arm/boot/dts/sh7372-mackerel.dts
new file mode 100644
index 0000000..286f0ca
--- /dev/null
+++ b/arch/arm/boot/dts/sh7372-mackerel.dts
@@ -0,0 +1,22 @@
+/*
+ * Device Tree Source for the mackerel board
+ *
+ * Copyright (C) 2012 Renesas Solutions Corp.
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2.  This program is licensed "as is" without any warranty of any
+ * kind, whether express or implied.
+ */
+
+/dts-v1/;
+/include/ "skeleton.dtsi"
+
+/ {
+	model = "Mackerel (AP4 EVM 2nd)";
+	compatible = "renesas,mackerel";
+
+	memory {
+		device_type = "memory";
+		reg = <0x40000000 0x10000000>;
+	};
+};