FirewallController - make mUseBpfOwnerMatch a bool

Test: builds, atest
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I422a74e7a6f44259bb5f0c7a88222328e432c35b
diff --git a/server/FirewallController.h b/server/FirewallController.h
index 43da322..620f196 100644
--- a/server/FirewallController.h
+++ b/server/FirewallController.h
@@ -104,7 +104,7 @@
   //    fails with EPERM. Netd can therefore assumes the max valid uid to be const.
   const uid_t mMaxUid;
   FirewallType mFirewallType;
-  android::bpf::BpfLevel mUseBpfOwnerMatch;
+  bool mUseBpfOwnerMatch;
   std::set<std::string> mIfaceRules;
   int attachChain(const char*, const char*);
   int detachChain(const char*, const char*);