IPACM: clean wlan NAT ifaces during modem SSR

Wlan-driver will disconnect/reconnect to IPA after modem
SSR and bootup again where framework already send
add_downstream to IPA and resulted in offload failed.
The workaround is to self delete NAT ifaces for wlan
related instances during SSR and cache the downstream
event before wlan restarts.

Change-Id: I178c418621862b19327f70a077623f14a69a56c6
6 files changed
tree: 0b0410a82e6715dc6f827ba6b5af7bbb5325ff86
  1. hal/
  2. ipacm/
  3. ipanat/
  4. configure.ac
  5. Makefile.am