hammerhead: readd DSP library

Change-Id: Ie233ab8e6e9dc6146a2da02610f1bf0bb55f1129
hammerhead: Do not build Torch app anymore

not needed in LP due of native API

Change-Id: I3fcddffb195f5723add5bee4ed3e9949221c2221
Overlay: Add ambient mode for hammerhead

Change-Id: I9a879a7741dbaf7a9a4519fb23ad7be702ba9de0
hammerhead: disable DOZE feature by default

user can enable it if they want it

Change-Id: Ia2a32f8827b21d567405dc86e28b88c71e074294
hammerhead: reenable notification and battery light overlays

Change-Id: I2f52ef61042f6d240cc798d45226e257e17401b9
hammerhead: disable touch boost debug spam

we use our own kernel implementation but still want to keep up
compatibility to third party kernels which may use stock mpdecision.

Therefore we simply disable debug for it so that we do not have complains
about missing stock mpdecision.

Change-Id: I06eb0953ea6c5750948ce3e6150470dcf977abb5
hammerhead: remove torch overlays as well

We already removed building it. Overlay we do not need as well.

Change-Id: I600473d6f3fca1f12b13534b2cbfe2c7910bb32c
Merge remote-tracking branch 'slimroms/lp5.0' into lp5.0

Conflicts:
	audio_effects.conf

Change-Id: I76ace565efd68494eed4f7025aec15ea15c523d3
derp

Change-Id: I0e599208f16b4c2890e42ecf885d6f6814699076