mlx5ib: Add support for NDR link speed.

The IBTA specification has new speed - NDR. That speed supports signaling
rate of 100Gb. mlx5 IB driver translates link modes reported by ConnectX
device to IB speed and width. Added translation of new 100Gb, 200Gb and
400Gb link modes to NDR IB type and width of x1, x2 or x4 respectively.

Linux commits:
f946e45f59ef01ff54ffb3b1eba3a8e7915e7326

Sponsored by: NVIDIA Networking

(cherry picked from commit 91c8ffd7e60fa7f017731cd234c01b7cddc05272)