All bridge drivers have been converted to the atomic variants of the
enable, disable, pre_enable, and post_disable callbacks.
Remove the deprecated legacy hooks from drm_bridge_funcs, the
drm_bridge_is_atomic() helper that was only needed to distinguish
between atomic and non-atomic bridges, and the legacy bridge test
cases.
Since all bridges are now atomic, unconditionally initialize the
private object state at attach time.
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patch.msgid.link/20260707-drm-all-atomic-bridges-v2-37-21d03cbca446@kernel.org
Signed-off-by: Maxime Ripard <mripard@kernel.org>
3e32e6672f