dts: bindings: can: infineon: xmc4xxx: rename clock_div8 to clock-div8

[henrikbrixandersen]

Rename the Infineon XMC4xxx CAN node devicetree property clock_div8 to clock-div8 (prefering hyphens over underscores to separate devicetree property names).

[kartben]

@henrikbrixandersen btw I think this is missing an entry in migration guide ; unless I am missing something this will break downstream users (although I think maybe the intent is that eventually, thanks to PR #83352, it will then "work again"? but in the mean time I think people need the heads-up)

[henrikbrixandersen]

@henrikbrixandersen btw I think this is missing an entry in migration guide ; unless I am missing something this will break downstream users (although I think maybe the intent is that eventually, thanks to PR #83352, it will then "work again"? but in the mean time I think people need the heads-up)

Sure, I'll add a note to the migration guide. I left it out since I expected a more general note about all the property renames would be added later on.