Re-land "[shill] Add hardware address to Device objects."

Forgot some headers...

BUG=chromium-os:17744
TEST=unit

This reverts commit 0fda552b0fec3498403336acb9e89dd7799cac74.

Change-Id: I1cd05e47d29bc7ea2a065cabf1d81dd37f74c0f8
Reviewed-on: http://gerrit.chromium.org/gerrit/6270
Reviewed-by: Chris Masone <cmasone@chromium.org>
Tested-by: Chris Masone <cmasone@chromium.org>
diff --git a/cellular.cc b/cellular.cc
index 4618c06..548ac54 100644
--- a/cellular.cc
+++ b/cellular.cc
@@ -102,6 +102,7 @@
                    EventDispatcher *dispatcher,
                    Manager *manager,
                    const string &link_name,
+                   const std::string &address,
                    int interface_index,
                    Type type,
                    const string &owner,
@@ -110,6 +111,7 @@
              dispatcher,
              manager,
              link_name,
+             address,
              interface_index),
       type_(type),
       state_(kStateDisabled),