dt-bindings: vendor-prefix: add prefix for the Czech Technical University in Prague.

The Czech Technical University in Prague (CTU) is one of
the biggest and oldest (founded 1707) technical universities
in Europe. The abbreviation in Czech language is ČVUT according
to official name in Czech language

  České vysoké učení technické v Praze

The English translation

  The Czech Technical University in Prague

The university pages in English

  https://www.cvut.cz/en

Link: https://lore.kernel.org/all/ff3a7216114fcd83530e70b994ef0e4277ddf000.1647904780.git.pisa@cmp.felk.cvut.cz
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>