mellanox: Added text/hexdump trace of Linux driver
mellanox: Added text/hexdump trace of Linux driver

This is useful because some differences that are subtle when comparing
source code are obvious when comparing hexdumps. If the card does not
respond to a command the way we expect then we can check what we are
doing differently to the Linux driver.

SnabbCo/snabbswitch,eugeneia/snabb,eugeneia/snabb,Igalia/snabb,snabbco/snabb,Igalia/snabb,SnabbCo/snabbswitch,eugeneia/snabb,eugeneia/snabb,eugeneia/snabb,Igalia/snabb,snabbco/snabb,eugeneia/snabb,snabbco/snabb,snabbco/snabb,eugeneia/snabb,Igalia/snabb,Igalia/snabb,snabbco/snabb,snabbco/snabb,snabbco/snabb,snabbco/snabb,SnabbCo/snabbswitch,eugeneia/snabb,Igalia/snabb,SnabbCo/snabbswitch,Igalia/snabb,Igalia/snabb