Adding FMPI2C to F4xx family. (#526)

* Adding FMPI2C to F4xx family.

This adds the FMPI2C i2c devices but it was a bit difficult due to the
fact that only one i2c version is allowed. This was fixed by adding a
symlink to i2c_v2.yaml which was named i2c2_v2.yaml this allows for
both devices to exist on the same chip and keeps the yaml files aligned.

* Update perimap.rs

I had a tab!

* I'm just trying to please the CI now.

Made the regex a bit less complex

* Changed i2c2_v2.yaml to copy of i2c_v2.yaml

* removed Symbolic Link

* ReAdded as a normal file.