Avoid using FileDescriptor#getInt$() on R

FileDescriptor#getInt$() is a hidden API with the unsupportedApiUsage
annotation on R. Accessing it will cause a NewApi linter check error.
It should be removed from OffloadHalHidlImpl as it is only used for
log messages.

Bug: b/205762647
Test: m
Change-Id: Ie41d12988aee65a066dfb1529e828f4523cc0907
1 file changed