ARM: mach-shmobile: Use DT_MACHINE for KZM9G

Use DT_MACHINE_START() on the sh73a0 based KZM9G board.

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

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig
index c39413a..2ed3995 100644
--- a/arch/arm/mach-shmobile/Kconfig
+++ b/arch/arm/mach-shmobile/Kconfig
@@ -102,6 +102,7 @@
 	bool "KZM-A9-GT board"
 	depends on ARCH_SH73A0
 	select ARCH_REQUIRE_GPIOLIB
+	select USE_OF
 
 comment "SH-Mobile System Configuration"
 
diff --git a/arch/arm/mach-shmobile/board-kzm9g.c b/arch/arm/mach-shmobile/board-kzm9g.c
index 78e9850..d8e33b6 100644
--- a/arch/arm/mach-shmobile/board-kzm9g.c
+++ b/arch/arm/mach-shmobile/board-kzm9g.c
@@ -443,7 +443,12 @@
 	platform_add_devices(kzm_devices, ARRAY_SIZE(kzm_devices));
 }
 
-MACHINE_START(KZM9G, "kzm9g")
+static const char *kzm9g_boards_compat_dt[] __initdata = {
+	"renesas,kzm9g",
+	NULL,
+};
+
+DT_MACHINE_START(KZM9G_DT, "kzm9g")
 	.map_io		= sh73a0_map_io,
 	.init_early	= sh73a0_add_early_devices,
 	.nr_irqs	= NR_IRQS_LEGACY,
@@ -451,4 +456,5 @@
 	.handle_irq	= gic_handle_irq,
 	.init_machine	= kzm_init,
 	.timer		= &shmobile_timer,
+	.dt_compat	= kzm9g_boards_compat_dt,
 MACHINE_END