ARM: PRIMA2: use DT_MACHINE_START and convert to generic board

we will have SiRFMarco and SiRFPolo, all of them will be in the
generic board.

Signed-off-by: Barry Song <Baohua.Song@csr.com>

arch/arm/mach-prima2/common.c

@@ -0,0 +1,50 @@
+/*
+ * Defines machines for CSR SiRFprimaII
+ *
+ * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
+ *
+ * Licensed under GPLv2 or later.
+ */
+
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <asm/sizes.h>
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <linux/of.h>
+#include <linux/of_platform.h>
+#include "common.h"
+
+static struct of_device_id sirfsoc_of_bus_ids[] __initdata = {
+	{ .compatible = "simple-bus", },
+	{},
+};
+
+void __init sirfsoc_mach_init(void)
+{
+	of_platform_bus_probe(NULL, sirfsoc_of_bus_ids, NULL);
+}
+
+void __init sirfsoc_init_late(void)
+{
+	sirfsoc_pm_init();
+}
+
+#ifdef CONFIG_ARCH_PRIMA2
+static const char *prima2_dt_match[] __initdata = {
+       "sirf,prima2",
+       NULL
+};
+
+DT_MACHINE_START(PRIMA2_DT, "Generic PRIMA2 (Flattened Device Tree)")
+	/* Maintainer: Barry Song <baohua.song@csr.com> */
+	.map_io         = sirfsoc_map_lluart,
+	.init_irq	= sirfsoc_of_irq_init,
+	.timer		= &sirfsoc_timer,
+	.dma_zone_size	= SZ_256M,
+	.init_machine	= sirfsoc_mach_init,
+	.init_late	= sirfsoc_init_late,
+	.dt_compat      = prima2_dt_match,
+	.restart	= sirfsoc_restart,
+MACHINE_END
+#endif