samples: drivers: video: tcpserversink: add _dev suffix to variable

Variables that holds pointers to 'const struct device' typically end-up
with '_dev'. The tcpserversink video sample did not have it. Add it.

Signed-off-by: Josuah Demangeon <me@josuah.net>

Author: josuah

samples/drivers/video/tcpserversink/src/main.c

@@ -40,11 +40,11 @@ int main(void)
 	struct video_format fmt;
 	struct video_caps caps;
 	enum video_buf_type type = VIDEO_BUF_TYPE_OUTPUT;
-	const struct device *video;
+	const struct device *video_dev;
 
-	video = DEVICE_DT_GET(DT_CHOSEN(zephyr_camera));
-	if (!device_is_ready(video)) {
-		LOG_ERR("%s: video device not ready.", video->name);
+	video_dev = DEVICE_DT_GET(DT_CHOSEN(zephyr_camera));
+	if (!device_is_ready(video_dev)) {
+		LOG_ERR("%s: video device not ready.", video_dev->name);
 		return 0;
 	}
 
@@ -75,14 +75,14 @@ int main(void)
 
 	/* Get capabilities */
 	caps.type = type;
-	if (video_get_caps(video, &caps)) {
+	if (video_get_caps(video_dev, &caps)) {
 		LOG_ERR("Unable to retrieve video capabilities");
 		return 0;
 	}
 
 	/* Get default/native format */
 	fmt.type = type;
-	if (video_get_format(video, &fmt)) {
+	if (video_get_format(video_dev, &fmt)) {
 		LOG_ERR("Unable to retrieve video format");
 		return 0;
 	}
@@ -119,11 +119,11 @@ int main(void)
 
 		/* Enqueue Buffers */
 		for (i = 0; i < ARRAY_SIZE(buffers); i++) {
-			video_enqueue(video, buffers[i]);
+			video_enqueue(video_dev, buffers[i]);
 		}
 
 		/* Start video capture */
-		if (video_stream_start(video, type)) {
+		if (video_stream_start(video_dev, type)) {
 			LOG_ERR("Unable to start video");
 			return 0;
 		}
@@ -134,7 +134,7 @@ int main(void)
 		i = 0;
 		vbuf->type = type;
 		do {
-			ret = video_dequeue(video, &vbuf, K_FOREVER);
+			ret = video_dequeue(video_dev, &vbuf, K_FOREVER);
 			if (ret) {
 				LOG_ERR("Unable to dequeue video buf");
 				return 0;
@@ -150,18 +150,18 @@ int main(void)
 				close(client);
 			}
 
-			(void)video_enqueue(video, vbuf);
+			(void)video_enqueue(video_dev, vbuf);
 		} while (!ret);
 
 		/* stop capture */
-		if (video_stream_stop(video, type)) {
+		if (video_stream_stop(video_dev, type)) {
 			LOG_ERR("Unable to stop video");
 			return 0;
 		}
 
 		/* Flush remaining buffers */
 		do {
-			ret = video_dequeue(video, &vbuf, K_NO_WAIT);
+			ret = video_dequeue(video_dev, &vbuf, K_NO_WAIT);
 		} while (!ret);
 
 	} while (1);