if_bnxt: Enabled support for 1G SX, CX, and LX forced speed settings
Enabled User Configuration of 1G Speed on Wh+ SFP28 Port with AOC
cable.
Reviewed by: imp
Approved by: imp
Differential revision: https://reviews.freebsd.org/D42953
(cherry picked from commit 0f8d1a9e0cd26bf4dd0b2fe2d28c1ab15d03cce4)