Merge "Revert "libcore: Remove native calls in FileDescriptor <clinit>"" into rvc-dev am: c5bf4e3807 am: 67266859ad am: 8c34163cfa

Original change: https://googleplex-android-review.googlesource.com/c/platform/libcore/+/10604244

Change-Id: Iec4c0b87f295e8c1979e449d55d530d5e1d4a57e