[loeg]

It's not quite a canned package, but we try to keep the Laptop support wiki up to date:

https://wiki.freebsd.org/Laptops#T-Z

And for the T470s in particular (yes, it's somewhat sparse, and the links suggest a non-ideal amount of effort required, but purportedly it seems to work at the end): https://wiki.freebsd.org/Laptops/Thinkpad_T470s