[media] cec rst: convert tables and drop the 'row' comments

This uses Laurent's python script to convert all tables, dropping
the useless 'row' comments.

See commit c2b66caf ("[media] v4l: doc: Remove row numbers from tables")
for the script that was used.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>