K 10
svn:author
V 2
mw
K 8
svn:date
V 27
2019-10-31T15:44:26.655404Z
K 7
svn:log
V 458
Split Rx/Tx from initialization code in ENA driver

Move Rx/Tx routines to separate file.
Some functions:
* ena_restore_device,
* ena_destroy_device,
* ena_up,
* ena_down,
* ena_refill_rx_bufs
could be reused in upcoming netmap code in the driver. To make it
possible, they were moved to ena.h header.

Differential Revision: https://reviews.freebsd.org/D21933
Submitted by:  Rafal Kozik <rk@semihalf.com>
Obtained from: Semihalf
Sponsored by:  Amazon, Inc.

END