[media] uvcvideo: Rename uvc_alloc_buffers to uvc_request_buffers

This brings the function name in line with the V4L2 API terminology.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>

drivers/media/usb/uvc/uvc_queue.c

@@ -205,7 +205,7 @@ void uvc_queue_release(struct uvc_video_queue *queue)
  * V4L2 queue operations
  */
 
-int uvc_alloc_buffers(struct uvc_video_queue *queue,
+int uvc_request_buffers(struct uvc_video_queue *queue,
 			struct v4l2_requestbuffers *rb)
 {
 	int ret;

drivers/media/usb/uvc/uvc_v4l2.c

@@ -690,7 +690,7 @@ static int uvc_ioctl_reqbufs(struct file *file, void *fh,
 		return ret;
 
 	mutex_lock(&stream->mutex);
-	ret = uvc_alloc_buffers(&stream->queue, rb);
+	ret = uvc_request_buffers(&stream->queue, rb);
 	mutex_unlock(&stream->mutex);
 	if (ret < 0)
 		return ret;

drivers/media/usb/uvc/uvcvideo.h

@@ -624,7 +624,7 @@ extern struct uvc_entity *uvc_entity_by_id(struct uvc_device *dev, int id);
 extern int uvc_queue_init(struct uvc_video_queue *queue,
 		enum v4l2_buf_type type, int drop_corrupted);
 extern void uvc_queue_release(struct uvc_video_queue *queue);
-extern int uvc_alloc_buffers(struct uvc_video_queue *queue,
+extern int uvc_request_buffers(struct uvc_video_queue *queue,
 		struct v4l2_requestbuffers *rb);
 extern int uvc_query_buffer(struct uvc_video_queue *queue,
 		struct v4l2_buffer *v4l2_buf);