Revert "drm/vc4: hdmi: Make sure the device is powered with CEC"

This reverts commit d5e81e3a which is
commit 20b0dfa8

 upstream.

It wasn't applied correctly, something went wrong with an attempt to fix
it up again, so just revert the whole thing to be back at a clean state.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20220205171238.GA3073350@roeck-us.net


Reported-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Link: https://lore.kernel.org/r/Yf5lNIJnvhP4ajam@kroah.com


Cc: Dave Stevenson <dave.stevenson@raspberrypi.com>
Cc: Maxime Ripard <maxime@cerno.tech>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>