ipacm: buffer downstream and upstream events

Add framework event cache in offload manager class to
ihandle the timing issue between android framework and
wlan-driver. Note framework starts to send
set_upstream/add_downstream to IPACM when link property
is set however wlan-driver is not completed the IPA-HW
pipe configuration because it triggered by hostapd not
link property. The fix is to add cache on offload manager
to start offload after wlan-driver is ready.

Bug: 34361337

Change-Id: I1ec3ad30ba3beb8198bdee7a10779dcaf07c51cd
5 files changed
tree: d64a10612a5173218048bbb84929ba30fee6f4da
  1. hal/
  2. ipacm/
  3. ipanat/
  4. configure.ac
  5. Makefile.am