Mikoto@6.3.0 undefined node label causes build to fail

[NoPlanNomad]

When trying to build a config with mikoto 6.3.0 board selected the following error gets thrown.

devicetree error: /soc/uart@40002000: undefined node label 'uart0_default'

When building with the 7.2.0 revision this doesn't appear to be an issue.

[NoPlanNomad]

Narrowed the problem down to just 6.3, I'm currently building with 6.1 which works.
I'm not quite sure how the revisions work but the lack of a mikoto_6_3_0.overlay leads me to think that might be the problem.

[nmunnich]

I don't think we ever had support for 6.3. I assume that the definition for 6.3 is identical to 6.1 or something. @zhiayang can you confirm?

[zhiayang]

I don't think we ever had support for 6.3. I assume that the definition for 6.3 is identical to 6.1 or something. @zhiayang can you confirm?

According to the yaml files for mikoto I did actually define a v6.3. I assumed that the zephyr build system would automatically pick up the 6_1_0 overlay, but I guess not. I never actually built/ordered a v6 mikoto so I never tested it (:

Will put up a PR to add the missing overlay soon.

@NoPlanNomad For now you can build with 6.1, there's no changes between 6.1 and 6.3 that require zmk/zephyr changes.