Audioflinger: reverse logic of BT NREC indication

The interpretation of BT NREC by AudioFlinger to enable
or disable AEC and NS was wrong: NREC to ON (default) means
the phone (Audio Gateway) must enable local AEC and NS.

Change-Id: I88a264e7fc9831c43bbace4f6b585baec73f2006
2 files changed