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
a2dp freq boost patch - ramdisk permission change

To let bluedroid boost freq.

Change-Id: I2552cbfcf22a4aebbd05f4d06ebb25c36e68b5f4