fix setting of MAC register ZYD_MAC_RETRY for ZD1211B. maximum retry count must be set for each EDCA access category.
fix setting of MAC register ZYD_MAC_RETRY for ZD1211B.
maximum retry count must be set for each EDCA access category.

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