Add Configuration to APF Policy

Add Configuration to APF Policy

in b/37702435 battery was drained due to reception of
Ethernet frames with Eth-type < 0x600 (non ehternet II frames)

This change adds an XML file to drop/allow these frames
Dropping helps tp avoid acquiring a wakelock for the
reception of these packets, while allowing them may be needed
for some protocols
The Change allow the OEM to override the system settings

Bug: 37702435
Test: runtest frameworks-net
Merged-In: Idb6c215896ef230a8136ff4ecefc90ccdc5c1c6d

Change-Id: Idb6c215896ef230a8136ff4ecefc90ccdc5c1c6d
Signed-off-by: Ahmed ElArabawy <arabawy@google.com>