Merge branch 'lan966x-mqprio-taprio'

Horatiu Vultur says:

====================
net: lan966x: Add mqprio and taprio support

Add support for offloading QoS features with tc command to lan966x. The
offloaded QoS features are mqprio and taprio.

v1->v2:
- fix compilation warning
- rename lan966x_taprio_enable/disable to lan966x_taprio_add/del
====================

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