x86: dtb: Add generic bus probe

For now we probe these busses and we change this to board dependent
probes once we have to.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Dirk Brandewie <dirk.brandewie@gmail.com>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: sodaville@linutronix.de
Cc: devicetree-discuss@lists.ozlabs.org
LKML-Reference: <1298405266-1624-9-git-send-email-bigeasy@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/kernel/devicetree.c

@@ -103,6 +103,25 @@ void __init add_dtb(u64 data)
 	initial_dtb = data + offsetof(struct setup_data, data);
 }
 
+/*
+ * CE4100 ids. Will be moved to machine_device_initcall() once we have it.
+ */
+static struct of_device_id __initdata ce4100_ids[] = {
+	{ .compatible = "intel,ce4100-cp", },
+	{ .compatible = "isa", },
+	{ .compatible = "pci", },
+	{},
+};
+
+static int __init add_bus_probe(void)
+{
+	if (!initial_boot_params)
+		return 0;
+
+	return of_platform_bus_probe(NULL, ce4100_ids, NULL);
+}
+module_init(add_bus_probe);
+
 #ifdef CONFIG_PCI
 static int x86_of_pci_irq_enable(struct pci_dev *dev)
 {