- add missing braces for SIOCSIFMTU switch case. - allow reception of Jumbo frames all the time on GEnesis based cards, same as Yukon based cards.
- add missing braces for SIOCSIFMTU switch case.
- allow reception of Jumbo frames all the time on GEnesis based cards,
same as Yukon based cards.

ok krw@ mcbride@

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