Merge tag 'gvt-next-2018-04-23' of https://github.com/intel/gvt-linux into drm-intel-next-queued

- Minor condition check improvment (Gustavo A. R. Silva)
- Non-priviliged batch buffer scan (Yan Zhao)
- Scheduling optimizations (Zhipeng Gong)

Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/5dafba29-b2bd-6b94-630e-db5c009da7e3@intel.com