Active Mode Berkeley Packet Filter (Active BPF) is a new feature that
allows firmware to apply BPF even while the Apps processor is active.
There are 3 modes:
* Disabled: do not apply BPF in active mode
* Enabled: apply BPF to all packets in active mode
* Adaptive: apply BPF up to some threshold to avoid performance impact
Add an ini item called gActiveBpfMode to configure the Active BPF Mode
in firmware.
Change-Id: I6cf60d67238802fe1e1662c040910091f5c25bec
CRs-Fixed: 1111400
13995f0efc