ixl: Update to 1.4.5-k.

This first update will revert some upstream changes; forthcoming updates will reinstate them.

Changes, by author:

Anjali Singhai Jain i40e-shared: Add WB_ON_ITR offload support
Shannon Nelson i40e-shared: fix phy_types bitmap type
Kevin Scott i40e-shared: Store off PHY capabilities
Shannon Nelson i40e-shared: fix byteswap of phy_type
Jingjing Wu i40e-shared: Fix compile issue related to const string
Greg Bowers i40e-shared: Add AQ defines for non-willing Apps (DCB)
Greg Bowers i40e-shared: Support for non-willing Apps (DCB)
Shannon Nelson i40e-shared: use upper-32 bit macro for address
Shannon Nelson i40e-shared: grab the AQ spinlocks before clearing registers
Eric Joyner ixl: Properly strip out X722_SUPPORT (temporarily).
Eric Joyner ixl: Allow Fort Pond devices to advertise 100M in set_advertise sysctl.

Differential Revision: https://reviews.freebsd.org/D6211
Reviewed by: sbruno, kmacy, jeffrey.e.pieper@intel.com
MFC after: 2 weeks
Sponsored by: Intel Corporation