Include the pending update from the FBC worker in i915_fbc_status.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Paulo Zanoni <paulo.r.zanoni@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20171220205848.8510-1-chris@chris-wilson.co.ukReviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>