Add this back

It was never meant to be removed :)

default.xml

@@ -220,7 +220,7 @@
   <!--project path="external/regex-re2" name="platform/external/regex-re2" /> -->
   <!--project path="external/replicaisland" name="platform/external/replicaisland" /> -->
   <!--project path="external/robolectric" name="platform/external/robolectric" /> -->
-  <!--project path="external/safe-iop" name="platform/external/safe-iop" groups="pdk" /> -->
+  <project path="external/safe-iop" name="platform/external/safe-iop" groups="pdk" />
   <!--project path="external/scrypt" name="platform/external/scrypt" groups="pdk" /> -->
   <project path="external/sepolicy" name="android_external_sepolicy" remote="omnirom" revision="android-4.4" />
   <!--project path="external/sfntly" name="platform/external/sfntly" /> -->