audio_policy: Update audio_policy.conf to modified version of caf, to fix VOIP calling

Change-Id: I521e6de9b62bc375db37321a162b818284ce60a3
BoardConfig: switch to audio-caf (voip bug squashed)

Change-Id: I2ad482233c164060e2667d784ca61b7d4f695144
msm8660: build-properties: switch back to gpu composition (mdp cuased thouch lag)

Change-Id: I1dc3ea4073a0fa9db0515d29b98a8cd581f67499
msm8660: build-properties: add sf.compbypass.enable=0

Seems to help with the extra video artifcats when using gpu composition

Also is suppose to allow surfacefinger to use gpu (seems to be a slight performance increse but very small)

Change-Id: I633f8fd17ed03ad450fb7f10419f469e22ce3ea9
msm8660: minor cosmetic cleanup

Change-Id: I7428188a530d54cb33043ff5877fee8c17c9e4bd