Update legacy (non-iflib) drivers in 11-STABLE branch with recent changes from out-of-tree version.
- Support for new BASE-T device with additional link speeds (2.5G and 5G) and EEE.
- Additional I2C access methods backported from ixl-iflib
- FW LLDP Agent control with sysctl added also for X722 devices
- MAC/VLAN filters handling refactored
- Fix building and loading if_ixlv as KLD