[riot-notifications] [RIOT-OS/RIOT] b/c/particle-mesh: Switch default stdio to USB (#15394)

[chrysn]

### Contribution description

The particle boards have their on-board USB connector wired into the CPU; since CDC-ACM stdio is now readily available, and because while there is a pair of RX/TX pins but no shipped hardware that connects them to the host, it makes the better default.

### Testing procedure

<!--
Details steps to test your contribution:
- which test/example to compile for which board and is there a 'test' command
- how to know that it was not working/available in master
- the expected success test output
-->


### Issues/PRs references

This is especially convenient since #12751 is merged, as when using the Particle bootloader, support for rebooting into the bootloader is there. Thus, with the new defaults, new programs can be flashed in zero-touch, and the DFU mode only needs to be entered manually the first time a RIOT program is flashed (or when the current program has no USB enabled).
You can view, comment on, or merge this pull request online at:

  https://github.com/RIOT-OS/RIOT/pull/15394

-- Commit Summary --

  * b/c/particle-mesh: Switch default stdio to USB

-- File Changes --

    M boards/common/particle-mesh/Kconfig (1)
    M boards/common/particle-mesh/Makefile.features (2)
    M boards/common/particle-mesh/Makefile.include (2)

-- Patch Links --

https://github.com/RIOT-OS/RIOT/pull/15394.patch
https://github.com/RIOT-OS/RIOT/pull/15394.diff

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/RIOT-OS/RIOT/pull/15394
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.riot-os.org/pipermail/notifications/attachments/20201106/8d07a715/attachment.htm>