Build toolbox with _FILE_OFFSET_BITS=64.

32-bit devices still exist...

Bug: http://b/72335947
Test: builds
Change-Id: Ia644640f19ad9d9160554e3fe329b3ce8e585c66
diff --git a/toolbox/Android.bp b/toolbox/Android.bp
index 9f7fc3b..ddd95b2 100644
--- a/toolbox/Android.bp
+++ b/toolbox/Android.bp
@@ -6,6 +6,7 @@
         "-Wno-unused-parameter",
         "-Wno-unused-const-variable",
         "-include bsd-compatibility.h",
+        "-D_FILE_OFFSET_BITS=64",
     ],
     local_include_dirs: ["upstream-netbsd/include/"],
 }