open-source-silicon.dev

<https://github.com/The-OpenROAD-Project/OpenLane/pull/1736|#1736 Run full synth checks when synth elaborate is on>
Pull request opened by <https://github.com/kareefardi|kareefardi>
```
+ set pre_synth_report depending on SYNTH_ELABORATE_ONLY
~ adjust _EXT variables in synth.tcl
~ better log message for /// sta-blackbox
- remove multiple drivers in caravel_upw and
keep the power connections only as we are mainly interested in them
```

* * *

Fixes <https://github.com/The-OpenROAD-Project/OpenLane/issues/1735|#1735>
<https://github.com/The-OpenROAD-Project/OpenLane|The-OpenROAD-Project/OpenLane>
:white_check_mark: All checks have passed
26/26 successful checks

<https://github.com/The-OpenROAD-Project/OpenLane/pull/1736|#1736 Run full synth checks when synth elaborate is on>
Pull request merged by <https://github.com/kareefardi|kareefardi>
<https://github.com/The-OpenROAD-Project/OpenLane|The-OpenROAD-Project/OpenLane>