Add WakeupController and NFLogListener

These classes work together to parse and dispatch NFLOG messages in
response to inbound packets annotated by the WiFi driver.

Test: as follows
    - built
    - flashed
    - booted
    - netd_unit_test passes

Change-Id: Id26d62858bf4bc4186ae66850f08077adf6fc2ac
diff --git a/server/NetlinkManager.h b/server/NetlinkManager.h
index d5d18b2..ea94e7d 100644
--- a/server/NetlinkManager.h
+++ b/server/NetlinkManager.h
@@ -55,6 +55,8 @@
     static const int NFLOG_QUOTA_GROUP;
     /* Group used by StrictController rules */
     static const int NETFILTER_STRICT_GROUP;
+    /* Group used by WakeupController rules */
+    static const int NFLOG_WAKEUP_GROUP;
 
 private:
     NetlinkManager();