Fix the target art method address within a method object

The target offset of art method within a method object should
take account of the offset of the image which is declaring this
method.

Bug: 31311504
Change-Id: Id6670dd3436b4bf5fb943d8d6234851fb336a4dc
(cherry picked from commit 1717159b07abefcf59d099bc81158644f0a0bffb)
Test: test-art-{host,target}
1 file changed