drm/i915: Fix gen8 semaphores id for legacy mode
With the introduction of a distinct engine->id vs the hardware id, we need to fix up the value we use for selecting the target engine when signaling a semaphore. Note that these values can be merged with engine->guc_id. Fixes: de1add36Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Reviewed-by: NVille Syrjälä <ville.syrjala@linux.intel.com> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com> Link: http://patchwork.freedesktop.org/patch/msgid/1461932305-14637-3-git-send-email-chris@chris-wilson.co.uk
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