let's at least log the src mac as being the src mac, not the dst

changing the field names is much harder due to it going via AIDL

Test: TreeHugger
Bug: 292404319
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I4101caf3b0d2abfadbabf3f389155c29a4d64e0f

core/java/android/net/metrics/WakeupEvent.java

@@ -29,7 +29,7 @@ public class WakeupEvent {
     public String iface;
     public int uid;
     public int ethertype;
-    public MacAddress dstHwAddr;
+    public MacAddress dstHwAddr;  // actually used to store a src mac address
     public String srcIp;
     public String dstIp;
     public int ipNextHeader;
@@ -44,7 +44,7 @@ public class WakeupEvent {
         j.add(iface);
         j.add("uid: " + Integer.toString(uid));
         j.add("eth=0x" + Integer.toHexString(ethertype));
-        j.add("dstHw=" + dstHwAddr);
+        j.add("srcMac=" + dstHwAddr);  // really!! http://b/292404319#comment11
         if (ipNextHeader > 0) {
             j.add("ipNxtHdr=" + ipNextHeader);
             j.add("srcIp=" + srcIp);