MFC r333149: ixl(4): Update to 1.9.9-k
Major changes:
- Support for descriptor writeback mode (required by ixlv(4) for AVF support)
- Ability to disable firmware LLDP agent by user
- Fix for TX queue hang when using TSO
- Separate descriptor ring sizes for TX and RX rings
Approved by: re (marius)
Relnotes: yes
Sponsored by: Intel Corporation