Revert "cyanogen-dsp: Switch equalizer to Android version"

This reverts commit ef221b24a25df340292ba903436e547aa21c1286.

Change-Id: Ibd788932711cc2c1d991780cfdcad4c03f3590db
dsp: don't read off the end of the data array

* EQ_PARAM_CUR_PRESET will attempt to read a 32-bit value from a 16-bit
  location, resulting in an extra 16 garbage bits being read.

Change-Id: Ie6aa89c5a2d2853170cbd06343cee853a903745c