drm/bridge: analogix_dp: Pass struct drm_atomic_state* for analogix_dp_bridge_mode_set()

drm/bridge: analogix_dp: Pass struct drm_atomic_state* for analogix_dp_bridge_mode_set()

To avoid using &analogix_dp_device.connector for compatibility
with the bridge connector framework, get &drm_connector from
&drm_atomic_state instead.

Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Luca Ceresoli <luca.ceresoli@bootlin.com>
Link: https://patch.msgid.link/20260413132551.1049307-2-damon.ding@rock-chips.com
Signed-off-by: Luca Ceresoli <luca.ceresoli@bootlin.com>