ieee1394: convert ieee1394 from "struct class_device" to "struct device"

Here is a straightforward conversion to "struct device". The "struct
class_device" will be removed from the kernel.

It seems to work fine for me with and without CONFIG_SYSFS_DEPRECATED
set.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/ieee1394/hosts.h b/drivers/ieee1394/hosts.h
index feb55d0..979fd19 100644
--- a/drivers/ieee1394/hosts.h
+++ b/drivers/ieee1394/hosts.h
@@ -57,7 +57,7 @@
 	struct hpsb_host_driver *driver;
 	struct pci_dev *pdev;
 	struct device device;
-	struct class_device class_dev;
+	struct device host_dev;
 
 	struct delayed_work delayed_reset;
 	unsigned config_roms:31;