Add load base to map for relocation packing.

The new linker relocation packing support uses non-zero load bases,
so we better handle them properly.

Also print out the load base for a map if it's non-zero.

Bug: 20687795
Change-Id: Iec2d1db2051e7b4a278c1dfa57d745128a7f2974
diff --git a/debuggerd/tombstone.cpp b/debuggerd/tombstone.cpp
index 094ab48..81da16d 100644
--- a/debuggerd/tombstone.cpp
+++ b/debuggerd/tombstone.cpp
@@ -379,6 +379,9 @@
         line += " (BuildId: " + build_id + ")";
       }
     }
+    if (it->load_base != 0) {
+      line += android::base::StringPrintf(" (load base 0x%" PRIxPTR ")", it->load_base);
+    }
     _LOG(log, logtype::MAPS, "%s\n", line.c_str());
   }
   if (print_fault_address_marker) {