media: vimc: fill in bus_info in media_device_info

It is good practice to fill in bus_info.

Also just use 'platform:vimc' when filling in the bus_info in querycap:
the bus_info has nothing to do with the video device name.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Acked-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
diff --git a/drivers/media/platform/vimc/vimc-capture.c b/drivers/media/platform/vimc/vimc-capture.c
index 93837d9..a6f8715 100644
--- a/drivers/media/platform/vimc/vimc-capture.c
+++ b/drivers/media/platform/vimc/vimc-capture.c
@@ -70,12 +70,10 @@ struct vimc_cap_buffer {
 static int vimc_cap_querycap(struct file *file, void *priv,
 			     struct v4l2_capability *cap)
 {
-	struct vimc_cap_device *vcap = video_drvdata(file);
-
 	strscpy(cap->driver, VIMC_PDEV_NAME, sizeof(cap->driver));
 	strscpy(cap->card, KBUILD_MODNAME, sizeof(cap->card));
 	snprintf(cap->bus_info, sizeof(cap->bus_info),
-		 "platform:%s", vcap->vdev.v4l2_dev->name);
+		 "platform:%s", VIMC_PDEV_NAME);
 
 	return 0;
 }