ART: Change x86 from modify_ldt to set_thread_data

Do not use modify_ldt, so it can be deprecated.

Bug: 27199066
Change-Id: Ib5fb40d4f720b697d786c5c971638fd57681d308
(cherry picked from commit 8a2c62c62b3398afbac00b1cb8772ae5b53b62a3)
1 file changed