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
Revert "DSPManager: Boeffla sound control"

This reverts commit c35f0b416bdbc3cc38ccf78f5a9c979598115747.