Since we can include other binding files at any level (child,
grand-child, etc.) it makes no sense to maintain two copies of pinctrl
props definitions (pincfg-node/pincfg-node-group). Instead,
pincfg-node.yaml defines props at root level, and it is included where
needed, either child-binding or grandchild-binding.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
DTS property attributes are (by default) not required.
Explicitly specifying `required: false` is redundant.
Perhaps a warning to that effect would be useful.
Signed-off-by: Chris Friedt <cfriedt@meta.com>
