Heads UP - MFC for em coming shortly

[Jack Vogel]

I am preparing to update the em driver to the equivalent of my
6.6.6 driver. Just doing some last minute sanity checking, I
hope to the checkin before end of day.

This will provide support for devices up to our latest, the
next stage I'm planning will incorporate multiqueue and
multiple locks that are already in my Oplin driver (ixgbe)
but this will take a bit longer.

This driver has the support for TSO in it but its not on
by default, as soon as Andre is able to get that MFC'd
it can be enabled via a compile option.

Jack