vendor: omni: Do not enable telephony-ext as a global feature

this feature is breaking DEX_PREOPT on Sony AOSP devices.
So, do not enable it as a global feature although it is still
a default one.

Devices that are not compat with telephony-ext should
use this flag below before Omni common.mk inclusion.

BOARD_USES_TELEPHONY_EXTENSION := false

Example:
    https://gerrit.omnirom.org/#/c/22443/

Signed-off-by: Humberto Borba <humberos@gmail.com>
Change-Id: Iba82fa7072cd85361917705eaea53de5290747de
2 files changed
tree: 16ef1a832a0ac049f8162dcd84420d55cc5642d4
  1. build/
  2. charger/
  3. config/
  4. overlay/
  5. prebuilt/
  6. sepolicy/
  7. utils/
  8. Android.mk