p4wifi: sync with pershoot

-p4wifi: update nvcam from 7510's XWLPC
-Revert "p4wifi: remove audio_policy.tegra"
p4vzw: sync with pershoot

-Revert "p4vzw: remove audio_policy.tegra"
p4tmo: sync with pershoot

-Revert "p4tmo: remove audio_policy.tegra"
p4: sync with pershoot

-p4: update hwc, nvcam, video and ril from 7500's XWLP9
-Revert "p4: remove audio_policy.tegra"
p3: sync with pershoot

-p3: update ril from 7500's XWLP9
-Revert "p3: remove audio_policy.tegra"
t0lte: initial
smdk4210-tab: switch to opensource audio HAL
smdk4210-tab: libUMP package stub
smdk4210-tab: libwvm
i815: update for ril bringup
p68x0: build libsecril-client from source
p68x0: update for camera wrapper and gps
i815: add sirfgps
Update props and configs for Tab 7 Plus variants

-Build libsecril-client from source
-Update camera to use wrapper
-Move GPS out of common config