IPACM: add support for L2TP

Add support for L2TP in IPACM. For WLAN->ETH direction, we
use UCP to do two-pass processing to add 80 bytes header.
For ETH->WLAN direction, we use UCP to do single-pass
processing to remove 80 bytes header.

Change-Id: I296aee0fe857a7db4fc29f87c833224d7c0ffd9d
Acked-by: Shihuan Liu <shihuanl@qti.qualcomm.com>
13 files changed
tree: e7f2aab011f4e89e8b1f06cdd9f3ff0bb1abde10
  1. hal/
  2. ipacm/
  3. ipanat/
  4. configure.ac
  5. Makefile.am