art: Fix classlinker and nopatchoat test for PIC case

ClassLinker should not be checking oat data begin and the patch delta
as part of the checksum verification (when PIC is enabled).

Also update nopatchoat test since it needs to be parametric on whether
PIC is used.

(cherry-picked from AOSP master
230faa7c44ec1986d5fa93d205eb23cb8024e333)

Bug: 18035729
Change-Id: I4eb184d22616230a7b8f0dd514d3416d0976b07e