[Beignet] [PATCH 1/4] GBE: make all memory operation share same bti dependency.

[Song, Ruiling]

> In general this patch LGTM, I will push latter. I'm a little bit worry about
> whether and how it will impact the performance. We could do some
> benchmark test latter, and if it hurts performance, we may need further
> refine.
Yes, if it hurts performance, we need do some further investigation/optimization on the load/store schedule.