[dv] Use array for multi-reg in RAL model

Address #5852 item 1

Change to generate multi-reg as below. User can access the reg by using
the index, e.g. ral.sw_binding[0]
```
 class keymgr_reg_block extends dv_base_reg_block;
    rand keymgr_reg_sw_binding sw_binding[8];
    rand keymgr_reg_salt salt[8];
```

before this change, it generates the multi-reg like this
```
 class keymgr_reg_block extends dv_base_reg_block;
    rand keymgr_reg_sw_binding_0 sw_binding_0;
    rand keymgr_reg_sw_binding_1 sw_binding_1;
    rand keymgr_reg_sw_binding_2 sw_binding_2;
    rand keymgr_reg_sw_binding_3 sw_binding_3;
    rand keymgr_reg_sw_binding_4 sw_binding_4;
    rand keymgr_reg_sw_binding_5 sw_binding_5;
    rand keymgr_reg_sw_binding_6 sw_binding_6;
    rand keymgr_reg_sw_binding_7 sw_binding_7;
    rand keymgr_reg_salt_0 salt_0;
    rand keymgr_reg_salt_1 salt_1;
    rand keymgr_reg_salt_2 salt_2;
    rand keymgr_reg_salt_3 salt_3;
    rand keymgr_reg_salt_4 salt_4;
    rand keymgr_reg_salt_5 salt_5;
    rand keymgr_reg_salt_6 salt_6;
    rand keymgr_reg_salt_7 salt_7;
```

multi-fields will be handled in next PR

Signed-off-by: Weicai Yang <weicai@google.com>
4 files changed
tree: 64fe3724b71d5382443192fb9d69ab333f256a81
  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

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