[BUG] sof-plat-openmodules contains sections that break build reproducability

[kv2019i]

Describe the bug
With v2.13 release, it was noticed two builds of v2.13 that should be identical in a reprodible build, have differences, but the differences only show up in sof-PLAT-openmodules.ri . Other binaries, including standalone LLEXT modules, are ok and binaries match between different builds.

Sof-bin github PR check gives the following on 2.13 Intel binaries:

   ERROR:root:MISMATCH: sof-ptl-openmodules.ri  different       in v2.13.x/sof-ipc4-v2.13/ptl/intel-signed vs  v2.13.x/sof-ipc4-v2.13/ptl/community

To Reproduce
Run sof-bin PR tests in github.

Reproduction Rate
100%

Expected behavior
SOF binary outputs are reproducible.

Impact
Slows down release process as the the binaries signed with different keys have to be manually verified.

Environment

1. Branch name and commit hash of the 2 repositories: sof (firmware/topology) and linux (kernel driver).
   • Kernel: n/a
   • SOF: v2.13
2. Name of the topology file
   • Topology: n/a
3. Name of the platform(s) on which the bug is observed.
   • Platform: Intel ptl

[kv2019i]

Not blocking the release, but let me file this, so I can refer to this in the the 2.13 sof-bin pull request.

[lyakh]

zephyrproject-rtos/zephyr#91753 fixed this