drm/imx: Add missing DRM_BRIDGE_CONNECTOR dependency

drm/imx: Add missing DRM_BRIDGE_CONNECTOR dependency

When drm/bridge-connector was moved to DRM_DISPLAY_HELPER not all
users were updated. Add missing Kconfig selections.

Fixes: 9da7ec9b19d8 ("drm/bridge-connector: move to DRM_DISPLAY_HELPER module")
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20240906063857.2223442-1-alexander.stein@ew.tq-group.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>