Revert "drm/bridge: lt9611uxc: Register and attach our DSI device at probe"

This reverts commit 29aba28e.

This and the dependent fixes broke display on RB5.

Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>