CHROMIUM: virtio_video_enc: Use reasonable max for V4L2_CID_MPEG_VIDE…

…O_BITRATE.

Upon initialization the encode device requests the bitrate from the
underlying encoder and uses that as both the default and maximum value.
This prevents us from configuring bitrates higher than the initial
value, so this CL changes the maximum value to 1GBs instead.

Signed-off-by: David Staessens <dstaessens@google.com>

BUG=b:162799179
TEST=tast run DUT arc.VideoEncodeAccel.h264_192p_i420_vm

Change-Id: If015de58c02564dc49ba1dc8d1c5a0bff1299630
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/kernel/+/2522932
Reviewed-by: Alexandre Courbot <acourbot@chromium.org>
Commit-Queue: David Staessens <dstaessens@chromium.org>
Tested-by: David Staessens <dstaessens@chromium.org>

drivers/media/virtio/virtio_video_enc.c

@@ -211,7 +211,8 @@ int virtio_video_enc_init_ctrls(struct virtio_video_stream *stream)
 		v4l2_ctrl_new_std(&stream->ctrl_handler,
 				  &virtio_video_enc_ctrl_ops,
 				  V4L2_CID_MPEG_VIDEO_BITRATE,
-				  1, stream->control.bitrate,
+				  // Set max to 1GBs to cover most use cases.
+				  1, 1000000000,
 				  1, stream->control.bitrate);
 	}