SF: increase the number of buffers for SurfaceView

3 buffers are not sufficient for most apps to render at high refresh
rates. This change increases the maxAcquiredBufferCount on the buffer
queue for all surfaces, and removes the hwui-specific extra buffer
allocations. All Surfaces connected to SurfaceFlinger will have now
enough buffers to account for configured
'debug.sf.late.app.duration' value.

Test: Run backpressure based game on 60Hz and 120Hz and collect
traces
Bug: 188553729

Change-Id: Ib8fda5db3f48c3bfc6fbf07167b4313674512cee