recovery: match API to AOSP

Change-Id: Iee7bac811ea2c8877a6408a50caec79e475663f8
See: http://review.cyanogenmod.org/#/c/52047/
ramdisk: no longer force loading of modem and Q6 images

Change-Id: I1d4d4ef0080c52dc377dac38c414e644c27ede22
partial revert to jellybean branch.

Reverted the following:

* DSP configs
* uevend changes
* any non-critical build.prop tweaks
* ramdisk reverts
* copy hostapd.conf again

Change-Id: I92402c22c12b640ea69cb549c02ecbefcfe32687
libril: revert recent changes to match jellybean branch.

Lets see how this goes with all the other reverts

Change-Id: I91dc230184584e3badbbf3f8b8da93252e9ae53b
dsp: try and fix low in-call volume

Change-Id: I8b438786d3f31282d2d7b315e021338fd2038b51