Add offset to map data.

Also, print the offset in the maps section.

Bug: 20864928
Change-Id: I71f005726e5ef73cf75bbcb8f829fd5127cb9d61
diff --git a/debuggerd/tombstone.cpp b/debuggerd/tombstone.cpp
index 56c03f7..b7e6b17 100644
--- a/debuggerd/tombstone.cpp
+++ b/debuggerd/tombstone.cpp
@@ -371,7 +371,8 @@
     } else {
       line += '-';
     }
-    line += android::base::StringPrintf("  %8" PRIxPTR, it->end - it->start);
+    line += android::base::StringPrintf("  %8" PRIxPTR "  %8" PRIxPTR,
+                                        it->offset, it->end - it->start);
     if (it->name.length() > 0) {
       line += "  " + it->name;
       std::string build_id;