ExifInterface: Provide backward compatibility

ExifInterface.saveAttribute() didn't throw UnsupportedOperationException
before. Use IOException instead of UnsupportedOperationException for
backward compatibility.

Bug: 30936376, Bug: 32068647, Bug: 31319086
Change-Id: Ifb478db3af820eb846c5373d3a284367da3495a0
(cherry picked from commit 87a9ac70c3f223f8c55c420026268f115e0aec38)
1 file changed