VT6410 and VT6415 controllers do not implement the `channel enable' register, so don't incorrectly assume both channels are disabled on these controllers.
VT6410 and VT6415 controllers do not implement the `channel enable' register,
so don't incorrectly assume both channels are disabled on these controllers.

ok jsg@

orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars,orumin/openbsd-efivars