libgui: make MAX_FRAME_HISTORY a configurable property

Some devices have particularly large pipelines for decoding video. This
can result in large queues of decoded frames waiting to be displayed. If
the frame event history isn't large enough, then frame events can fall
out of the queue before the buffers are actually rendered, which causes
failures when processing consumer frame events.

Test: manually check that MAX_FRAME_HISTORY is configurable at build

Change-Id: I8bfcc6bf095e775c93a39669840d721417a58113