Merge branch 'mlxsw-Firmware-version-updates'

Ido Schimmel says:

====================
mlxsw: Firmware version updates

This patch sets contains two firmware-related updates.

Patch #1 bumps the required firmware version in order to support 2x50
Gb/s split on SN3800 systems.

Patch #2 changes the driver to only enforce a minimum required firmware
version, which should allow us to reduce the frequency in which we need
to update the driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>