The transfer timeout is 2100 ms, not 2.1 ms. Fix this in the
kerneldoc comment.

Link: https://lore.kernel.org/linux-media/17cd1a67-3966-237c-2e0d-2d3ae618f915@xs4all.nlSigned-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>