drm/vc4: Fix oops dereferencing DPI's connector since panel_bridge.
In the cleanup, I didn't notice that we needed to dereference the connector for the bus_format. Fix the regression by looking up the first (and only) connector attached to us, and assume that its bus_format is what we want. Some day it would be good to have that part of display_info attached to the bridge, instead. v2: Fix stray whitespace change Signed-off-by: Eric Anholt <eric@anholt.net> Fixes: 7b1298e0 ("drm/vc4: Switch DPI to using the panel-bridge helper.") Link: https://patchwork.freedesktop.org/patch/msgid/20180309233256.1667-1-eric@anholt.netReviewed-by: Sean Paul <seanpaul@chromium.org> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com> Signed-off-by: Sean Paul <seanpaul@chromium.org>
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