httplive/ACodec: Enable smooth streaming

- Use property to enable - hls.enable.smooth.streaming
- Set component in smooth streaming mode by doing a setParameter
  with OMX extension for SS
- Handle Port Reconfig Info event from component
- Whenever resolution changes do update buffer geometry on
  native window

Patchset 1: Add QCOM_HARDWARE ifdefs

Conflicts:

	media/libstagefright/ACodec.cpp

Change-Id: I694d05fe7aba2482f50f31a6e80b646822f15b31