The driver is written that we should support ETNA_NUM_VARYINGS and reporting
a bigger number will cause some troubles. I had a quick look at galcore's
hw database and there are entries that report a higher value.
So I think what we want is to the minimum value of what kernel driver reports
and what the gallium driver should be able to handle.
Fixes: 84816c22e4 ("etnaviv: ask kernel for max number of supported varyings")
Signed-off-by: Christian Gmeiner <cgmeiner@igalia.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27923>
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