[media] siano: use generic function to create MC device

Currently, it is initializing the driver name using the wrong
name ("usb"). Use the generic function, as its logic works
best, and avoids repeating the very same code everywhere.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/usb/siano/smsusb.c

@@ -27,6 +27,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include <linux/firmware.h>
 #include <linux/slab.h>
 #include <linux/module.h>
+#include <media/v4l2-mc.h>
 
 #include "sms-cards.h"
 #include "smsendian.h"
@@ -366,20 +367,10 @@ static void *siano_media_device_register(struct smsusb_device_t *dev,
 	struct sms_board *board = sms_get_board(board_id);
 	int ret;
 
-	mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
+	mdev = v4l2_mc_usb_media_device_init(udev, board->name);
 	if (!mdev)
 		return NULL;
 
-	mdev->dev = &udev->dev;
-	strlcpy(mdev->model, board->name, sizeof(mdev->model));
-	if (udev->serial)
-		strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial));
-	strcpy(mdev->bus_info, udev->devpath);
-	mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
-	mdev->driver_version = LINUX_VERSION_CODE;
-
-	media_device_init(mdev);
-
 	ret = media_device_register(mdev);
 	if (ret) {
 		media_device_cleanup(mdev);