HP priorities configuration in wrs_vlans and dot-config
Currently we don't have a configuration option in dot-config to specify which 802.1q priorities should be considered as High Priority (HP) traffic. There is also no shell tool that could set such a configuration to the RTU.
We should add a new option to the wrs_vlans tool, to accept the list of HP priorities. Also dot-config should allow listing such priorities together with VLANs configuration. Then, this list should be written to the PRIO_MASK[7:0] field in the RX CTR register of the RTU module.