drm/bridge: it66121: Wait for next bridge to be probed
If run before the next bridge is initialized, of_drm_find_bridge() will give us a NULL pointer. If that's the case, return -EPROBE_DEFER; we may have more luck next time. Signed-off-by: Paul Cercueil <paul@crapouillou.net> Fixes: 988156dc ("drm: bridge: add it66121 driver") Reviewed-by: Neil Armstrong <narmstrong@baylibre.com> Signed-off-by: Robert Foss <robert.foss@linaro.org> Link: https://patchwork.freedesktop.org/patch/msgid/20210827163956.27517-2-paul@crapouillou.net
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