Revert to using sbt-launch.jar to run SBT

[jerryz123]

As reported in sbt/sbt#6468, sbt --client does not pass flags to the client. This causes the client to ignore java.io.tmpdir, which breaks Chipyard usage on a shared machine.

Revert to invoking sbt through sbt-launch.jar

Related PRs / Issues:

Type of change:

• Bug fix
• New feature
• Other enhancement

Impact:

• RTL change
• Software change (RISC-V software)
• Build system change
• Other

Contributor Checklist:

• Did you set main as the base branch?
• Is this PR's title suitable for inclusion in the changelog and have you added a changelog:<topic> label?
• Did you state the type-of-change/impact?
• Did you delete any extraneous prints/debugging code?
• Did you mark the PR with a changelog: label?
• (If applicable) Did you update the conda .conda-lock.yml file if you updated the conda requirements file?
• (If applicable) Did you add documentation for the feature?
• (If applicable) Did you add a test demonstrating the PR?

• (If applicable) Did you mark the PR as Please Backport?

[abejgonzalez]

LGTM. Can you update FireSim + circular bump CY?

[jerryz123]

LGTM. Can you update FireSim + circular bump CY?

How does this affect firesim? I thought firesim ignored this makefile.

[abejgonzalez]

FireSim uses the CY build system if CY is top. However, if FSim-as-top is used then it uses its own build system. I assume a few people are using FSim-as-top so this issue would still occur for them.

[jerryz123]

I can change this in firesim, but I don't think the flow in chipyard and the flow in firesim have to match (there doesn't need to be a circular bump), since the flows are independent.