[prim_lfsr] Do not shadow |state| variable

A variable called `state` is used inside a function (with function
scope), and also in the module with module scope. This makes the
variable in the function shadow the one in the module. Verilator reports
this as lint warning. Since we build the OTBN smoke test in a way that
fails on warnings, we get a failing CI run for the OTBN smoke test.

This commit renames the variable inside the function to avoid the
shadowing.

```
%Warning-VARHIDDEN: ../src/lowrisc_prim_lfsr_0.1/rtl/prim_lfsr.sv:420:80: Declaration of signal hides declaration in upper scope: 'state'
  420 |                                                           logic[LfsrDw-1:0]    state);
      |                                                                                ^~~~~
                    ../src/lowrisc_prim_lfsr_0.1/rtl/prim_lfsr.sv:377:26: ... Location of original declaration
  377 |   logic [StateOutDw-1:0] state;
      |                          ^~~~~
                    ... Use "/* verilator lint_off VARHIDDEN */" and lint_on around source to disable this message.
```

Signed-off-by: Philipp Wagner <phw@lowrisc.org>
1 file changed
tree: 8e481561bd031e65ed764aedb3ed2531cc424330
  1. .github/
  2. ci/
  3. doc/
  4. hw/
  5. site/
  6. sw/
  7. test/
  8. util/
  9. .clang-format
  10. .dockerignore
  11. .flake8
  12. .gitignore
  13. .style.yapf
  14. .svlint.toml
  15. .svls.toml
  16. _index.md
  17. apt-requirements.txt
  18. azure-pipelines.yml
  19. check_tool_requirements.core
  20. CLA
  21. COMMITTERS
  22. CONTRIBUTING.md
  23. LICENSE
  24. meson.build
  25. meson_init.sh
  26. meson_options.txt
  27. python-requirements.txt
  28. README.md
  29. tool_requirements.py
  30. toolchain.txt
  31. topgen-generator.core
  32. topgen-reg-only.core
  33. topgen.core
  34. yum-requirements.txt
README.md

OpenTitan

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About the project

OpenTitan is an open source silicon Root of Trust (RoT) project. OpenTitan will make the silicon RoT design and implementation more transparent, trustworthy, and secure for enterprises, platform providers, and chip manufacturers. OpenTitan is administered by lowRISC CIC as a collaborative project to produce high quality, open IP for instantiation as a full-featured product. See the OpenTitan site and OpenTitan docs for more information about the project.

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This repository contains hardware, software and utilities written as part of the OpenTitan project. It is structured as monolithic repository, or “monorepo”, where all components live in one repository. It exists to enable collaboration across partners participating in the OpenTitan project.

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