I'm no lawyer, but this part

"You are hereby granted a non-exclusive, worldwide, royalty-free license under Broadcom’s copyrights to use, copy, modify, and distribute this software in source code or binary form for use in connection with Broadcom products."

Feels like it's saying you're only allowed to use it in the future if you use it in relation to some Broadcom product.

One of my servers has a Broadcom NIC, so I guess I’m good to go.