Add basic logging infrastructure for bugreports

Test: as follows
    - built, flashed, booted
    - "adb shell dumpsys netd" shows logs
    - tests/runtests.sh passes
Change-Id: I0e44da7f9a9cc53074ffc396b958e9e2dbcd2603
diff --git a/server/NetdNativeService.h b/server/NetdNativeService.h
index 4e7cf0c..6ae5c89 100644
--- a/server/NetdNativeService.h
+++ b/server/NetdNativeService.h
@@ -20,6 +20,7 @@
 #include <vector>
 
 #include <binder/BinderService.h>
+#include <netdutils/Log.h>
 
 #include "android/net/BnNetd.h"
 #include "android/net/UidRange.h"