Changing names for ram address and data randomization

[secworks]

This PR is first attempt att fixing #219. Needs review and checks.

The build of the FPGA gives different results with the patch compared to main. The build should not be affected by simple name changes.

[dehanj]

The CI job check-hashes actually spits out the shasum of application_fpga.bin before it compares, so one easier can compare to the one you get locally with tkey-builder:4.

CI's calculated checksum from the logs

sha256sum application_fpga.bin
4095aaa97f41eba88b6ca846eb1cc81e84f368a86be747809490bb9beab20cb6  application_fpga.bin

[mchack-work]

Rebasing on main gets rid of the merge commit present in this branch and brings in a change for .gitignore.

Verified that the checksum on application_fpga.bin still is different than expected.

Last commit before the name changes, commit 0454e02, from main works fine.

Looked through carefully to see if any constants have changed. Only differences in, say, strings I have found are in the testbench, which shouldn't influence application_fpga.bin at all.