tuna: adapt keylayouts to 5.0
hwc: Add option to ignore fb1.

With Lollipop, HWC 1.0 and secondary displays don't play well together.
So we might as well just disable it and save 16MB of RAM.
gps: Put GPS config in the overlay.

Why did this need its own file?! :P
Add OMAP_TUNA := true to BoardConfig.

For the speex resampling, and possibly other things to come in the future.
Merge remote-tracking branch 'mw/aosp-5.0'