ixl(4): Update to 1.9.9-k
Refresh upstream driver before impending conversion to iflib.
- Support for descriptor writeback mode
- Ability to disable firmware LLDP agent by user (Bug 221530)
- Fix for TX queue hang when using TSO (Bug 221919)
- Separate descriptor ring sizes for TX and RX rings
Full history of changes in this update is available in GitHub repository: https://github.com/intel-wired-ethernet/freebsd/commits/ixl-update