Turns out neither the flow control diff nor the RX checksum offload diff is responsible for the hangs seen by Henning.  So put them back.
Turns out neither the flow control diff nor the RX checksum offload diff
is responsible for the hangs seen by Henning.  So put them back.

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