endeavoru bluedroid buildcfg: add freq boost for a2dp

Depending this review http://review.cyanogenmod.org/#/c/33594/,
we add configuration for a2dp cpu min freq boost to
let audio be processed without gaps, that might happen
due to too low cpu frequency (51mhz). Boosting it
to 204mhz for now.

Change-Id: I2fa4551a681b7d9a9a355fee8be228d66086fe92