power & s390x linux builds fail: interpreter_frame_initial_sp_offset undefined

AdoptOpenJDK pLinux and zLinux builds fail:
```
05:19:51 ./src/hotspot/os/posix/os_posix.cpp:969:42: error: 'interpreter_frame_initial_sp_offset' is not a member of 'frame'
05:19:51 activation.fp() + frame::interpreter_frame_initial_sp_offset));
```
This was introduced by:
https://github.com/openjdk/jdk/commit/ba5dc67a74c35e64b934ec8105a853770b30ed52

Ref: https://ci.adoptopenjdk.net/view/Failed%20Builds/job/build-scripts/job/jobs/job/jdk/job/jdk-linux-s390x-hotspot/275/console