Add PROBE_RUN_SPEED env variable

[haata]

• Useful when wanting to set the SWD speed in your .cargo/config.toml

[Urhengulas]

@haata said:

Useful when wanting to set the SWD speed in your .cargo/config.toml

What's the problem with setting it via the command line flag?

Anyways: bors r+

[haata]

Previously I would set --speed in .cargo/config.toml and check this in to the git rep. However, my project supports multiple debuggers which don't support the same SWD speeds. I haven't been able to figure out a good way of using other .cargo/config.toml files to override the one checked into git is what led me to this change

[Urhengulas]

bors r+

[Urhengulas]

bors cancel

[bors[bot]]

Canceled.

[Urhengulas]

Thanks.

bors r+

[bors[bot]]

Build succeeded:

• ci