media: flexcop: allow for modern speeds

High speed is no longer the ultimate in speed.

Link: https://lore.kernel.org/linux-media/20220517131109.28371-2-oneukum@suse.com
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>