[PATCH] drm/vc4: Reset ->{x, y}_scaling[1] when dealing with uniplanar formats

[Eric Anholt]

Boris Brezillon <boris.brezillon at bootlin.com> writes:

> This is needed to ensure ->is_unity is correct when the plane was
> previously configured to output a multi-planar format with scaling
> enabled, and is then being reconfigured to output a uniplanar format.
>
> Fixes: fc04023fafec ("drm/vc4: Add support for YUV planes.")
> Cc: <stable at vger.kernel.org>
> Signed-off-by: Boris Brezillon <boris.brezillon at bootlin.com>

Reviewed-by: Eric Anholt <eric at anholt.net>
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