Revert "mixer_paths: fix echo of caller when in speaker and raise speaker volume"

This causes static to be heard when hanging up a call

This reverts commit 0ae429ee91b41a248e4c3bff8eb4713d1593a3dd.
mixer_paths.xml: fix up caller echo while keeping the rest intact

The previous caller echo fix caused some static when hanging up.
This patch fixes the echo without changing any of the other routes.
gps.conf: updated gps.conf settings to closely match LG's
clone our new kernel header files
media_profiles.xml: bring in gproj's media_profiles.xml

These profiles include higher bitrate for 720p/1080p camcorder
codecs which are more appropriate. camcorder should now work fine
with these high resolutions.