drm/i915: Remove lite restore defines
We have switched from tail manipulation to forced context restore to implement WaIdleLiteRestore. Remove the old defines and comments. Note: we still do emit the WA tail, and use it as our first attempt to avoid forcing a full-restore instead of a lite-restore, we just have a much stronger backup mechanism for repeated preemptions. References: f26a9e95 ("drm/i915/gt: Detect if we miss WaIdleLiteRestore") Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Mika Kuoppala <mika.kuoppala@linux.intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20200203163312.15475-1-mika.kuoppala@linux.intel.com
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