opengl: fix UAL conformity

GAS assumes .align 2 if .align only is set, however the UAL doesn't enforce this assumption.

Change-Id: I88b567dc84ee8f04a13f2b8e80c3ee41530a9e49
GraphicProducerWrapper may return false transact status

GraphicProducerWrapper(GPW) changed how the methods of
BpGraphicBufferProducer(BpGBP) are executed.
First, "fake" BpGBP is created. Its remote is GPW. The GPW has
wrapped the real BpGBP.
All the method calls to the fake BpGPB will be intercepted by
the GPW inside it when the methods run into remote()->transact().
Then the GPW will invoke the transact() of the real BpGBP. And
Everything runs well except that the GPW forgets to store the
transact status and always return NO_ERROR to the fake BpGBP.

It would be disastrous if the binder call of the IGBP failed and
the out parameter "reply" of transact() was in unkown state.
E.g. the queueBuffer() in the fake BpGBP will try to operate on
the "reply". This will crash the SurfaceFlinger.

Change-Id: I01b31f64e1fc92804da3f16c1fb1420dcfb3b855
Signed-off-by: bdeng3X <bingx.deng@intel.com>
Signed-off-by: Guobin Zhang <guobin.zhang@intel.com>