usb: typec: ptn36502: switch to DRM_AUX_BRIDGE

Switch to using the new DRM_AUX_BRIDGE helper to create the transparent
DRM bridge device instead of handcoding corresponding functionality.

Signed-off-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Link: https://lore.kernel.org/r/20240315-ptn36502-aux-v1-1-c9d3c828ff2e@fairphone.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>