media: i2c: adv7604/tc358743/tda1997x: HPD low for HZ / 7

media: i2c: adv7604/tc358743/tda1997x: HPD low for HZ / 7

When the EDID is updated, the hotplug detect signal must remain low for
100 ms minimum. Currently these three drivers use that exact minimum,
but some HDMI transmitters need the HPD to be low for a bit longer
before they detect that they need to read the EDID again.

Experience shows that HZ / 7 (= 143 ms) is a good value.

So change HZ / 10 to HZ / 7.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>