frameworks/base/nuplayer: Support for dynamic port reconfig in HTTP Live

- BW switch is detected by the decoder by a port reconfig event
  instead of a discontinuity event
- Handle port reconfig dyanamically in ACodec
  Steps are - Flush - Get all buffers back - Disable - Enable
- Handle PID change in TS Parser - Set PID based on stream type

Patchset 1: Add QCOM_HARDWARE ifdefs

Conflicts:

	media/libstagefright/ACodec.cpp

Change-Id: I5ff494084fffa218cafd3cd6db1197aad2233c4d