Add support for .bss section in oat files.

Change-Id: I779b80b8139d9afdc28373f8c68edff5df7726ce
diff --git a/runtime/gc/accounting/space_bitmap.cc b/runtime/gc/accounting/space_bitmap.cc
index f5d3b47..ad8d988 100644
--- a/runtime/gc/accounting/space_bitmap.cc
+++ b/runtime/gc/accounting/space_bitmap.cc
@@ -63,7 +63,8 @@
   const size_t bitmap_size = ComputeBitmapSize(heap_capacity);
   std::string error_msg;
   std::unique_ptr<MemMap> mem_map(MemMap::MapAnonymous(name.c_str(), nullptr, bitmap_size,
-                                                       PROT_READ | PROT_WRITE, false, &error_msg));
+                                                       PROT_READ | PROT_WRITE, false, false,
+                                                       &error_msg));
   if (UNLIKELY(mem_map.get() == nullptr)) {
     LOG(ERROR) << "Failed to allocate bitmap " << name << ": " << error_msg;
     return nullptr;