bnxt(4): Implement temporary workaround in driver to report supported media
types that are currently unavailable from the firmware. e.g. 10G, 25G, 50G
& 100G

Submitted by: bhargava.marreddy@broadcom.com
Reviewed by: venkatkumar.duvvuru@broadcom.com
Differential Revision: https://reviews.freebsd.org/D10816