drm/i915: Allow some leniency in PCU reads
Extend the timeout for pcode reads to 20ms as they should not be performed along critical paths, and succeeding after a short delay is better than failing entirely. References: https://gitlab.freedesktop.org/drm/intel/-/issues/1800 Signed-off-by:Chris Wilson <chris@chris-wilson.co.uk> Reviewed-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200504044903.7626-1-chris@chris-wilson.co.uk
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