staging: bcm2835_codec: Clean up logging on unloading the driver

The log line was missing a closing \n, so wasn't added to the
log immediately.
Adds the function of the V4L2 device that is being unregistered
too.

Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.org>

drivers/staging/vc04_services/bcm2835-codec/bcm2835-v4l2-codec.c

@@ -77,6 +77,12 @@ enum bcm2835_codec_role {
  ISP,
 };
 
+const static char *roles[] = {
+ "decode",
+ "encode",
+ "isp"
+};
+
 static const char * const components[] = {
  "ril.video_decode",
  "ril.video_encode",
@@ -2511,7 +2517,6 @@ static int bcm2835_codec_create(struct platform_device *pdev,
  struct video_device *vfd;
  int video_nr;
  int ret;
- const static char *roles[] = {"decode", "encode", "isp"};
 
  dev = devm_kzalloc(&pdev->dev, sizeof(*dev), GFP_KERNEL);
  if (!dev)
@@ -2604,7 +2609,8 @@ static int bcm2835_codec_destroy(struct bcm2835_codec_dev *dev)
  if (!dev)
  return -ENODEV;
 
- v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME);
+ v4l2_info(&dev->v4l2_dev, "Removing " MEM2MEM_NAME ", %s\n",
+ roles[dev->role]);
  v4l2_m2m_release(dev->m2m_dev);
  video_unregister_device(&dev->vfd);
  v4l2_device_unregister(&dev->v4l2_dev);