DSPManager: Boeffla sound control

Requires Boeffla Sound 1.6.5
Should be compatible with later versions too.

Change-Id: I3e5447551bab1961f2bea4241a13572ec8009368
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