Qemu has deprecated extension name with capital 'Z'

[kito-cheng]

See this for detail:
https://www.qemu.org/docs/master/about/deprecated.html#risc-v-cpu-properties-which-start-with-capital-z-since-8-2

[TommyMurphyTM1234]

I've been asked to review this but I really don't know enough about the scripts directory to comment. The changes seem OK but could they be relevant to stuff like this perhaps?

• All targets/RISC-V/spike32.py tests failing riscv-openocd#1098

This was working before fairly recently but suddenly all Spike 32 tests are failing for some reason...

[cmuellner]

I've been asked to review this but I really don't know enough about the scripts directory to comment. The changes seem OK but could they be relevant to stuff like this perhaps?

• All targets/RISC-V/spike32.py tests failing riscv-openocd#1098

This was working before fairly recently but suddenly all Spike 32 tests are failing for some reason...

From the error log there:

unsupported extension: zvl128b

So, this is unrelated to this PR.

[cmuellner]

LGTM