samples: usb: uvc: ensure video buffer is properly aligned

Honor the CONFIG_VIDEO_BUFFER_POOL_ALIGN config by using the
video_buffer_aligned_alloc function instead of video_buffer_alloc
in order to provide properly aligned buffers to drivers.

Signed-off-by: Alain Volmat <[email protected]>

Author: Alain Volmat

samples/subsys/usb/uvc/src/main.c

@@ -175,7 +175,8 @@ int main(void)
 	LOG_INF("Preparing %u buffers of %u bytes", CONFIG_VIDEO_BUFFER_POOL_NUM_MAX, fmt.size);
 
 	for (int i = 0; i < CONFIG_VIDEO_BUFFER_POOL_NUM_MAX; i++) {
-		vbuf = video_buffer_alloc(fmt.size, K_NO_WAIT);
+		vbuf = video_buffer_aligned_alloc(fmt.size, CONFIG_VIDEO_BUFFER_POOL_ALIGN,
+						  K_NO_WAIT);
 		if (vbuf == NULL) {
 			LOG_ERR("Could not allocate the video buffer");
 			return -ENOMEM;