Turn reg_file_data_sampling=off (experiment, never merge)

[avnik]

Description of changes

Checklist for things done

• Summary of the proposed changes in the PR description
• More detailed description in the commit message(s)
• Commits are squashed into relevant entities - avoid a lot of minimal dev time commits in the PR
• Contribution guidelines followed
• Ghaf documentation updated with the commit - https://tiiuae.github.io/ghaf/
• PR linked to architecture documentation and requirement(s) (ticket id)
• Test procedure described (or includes tests). Select one or more:
  • Tested on Lenovo X1 x86_64
  • Tested on Jetson Orin NX or AGX aarch64
  • Tested on Polarfire riscv64
• Author has run nix flake check --accept-flake-config and it passes
• All automatic Github Action checks pass - see actions
• Author has added reviewers and removed PR draft status

Testing

[milva-unikie]

I ran performance tests on X1, this PR had no effect on them. Memory test results are still low.

[milva-unikie]

Bisect step 1/11
github:NixOS/nixpkgs/76ff5056a904a9d0e16b811f3af25d5950b5f339

Memory test results are at the normal high level.

[milva-unikie]

Bisect step 2/11
github:NixOS/nixpkgs/307ada3fc4d35f7f35feb9a0edab94f798092c1b

Memory test results are at the normal high level.

[milva-unikie]

Bisect step 3/11
386047017bed0ea4ec985bec134b4f8c2b5bd199

Memory test results are at the normal high level.

[milva-unikie]

Bisect step 4/11
fb8b096a243ae71d62e9be83ea0c2a2f6d50ea69

Memory test results are low.

[milva-unikie]

Bisect step 5/11
e42f762af098be9e16b8677441e011511a1f81e9

Memory test results are at the normal high level.

[milva-unikie]

Bisect step 6/11
033e72165ef3f3b6be6d901444ed5e5d0ef699aa

Memory test results are low.

[milva-unikie]

Bisect step 7/11
f53f26121baf6cedab75e46f216926ee6d634a3d

Memory test results are at the normal high level.

[milva-unikie]

Bisect step 8/11
63fc8d8df880141981b42917c0913c38a8d15264

Memory test results are low.

[milva-unikie]

Bisect step 9/11
cadd303c9a1a1b4394cd916bd9911cdc9b67d52a

Memory test results are low.

[milva-unikie]

Bisect step 10/11
5b44915269e6ebab5eafcbfc273e6cbdcecd2827

Memory test results are at the normal high level.

[milva-unikie]

Bisect step 11/11
a03387a1edd4b72e74912b47c97e2b5ac23642b3

Memory test results are low.

[milva-unikie]

Bisect step 12/11
7dccf6334c57d8c8f5411d1ee6e8328057539fca

Memory test results are at the normal high level.

[milva-unikie]

Bisect step 13/11
bbaca2d369cf3a38492b8dfe4aaa541b957eee2d

Memory test results are low.

bbaca2d369cf3a38492b8dfe4aaa541b957eee2d is the first bad commit.

[milva-unikie]

Latest commit returns memory test results to the normal high level.

[milva-unikie]

That fixed the problem, results are good again.