Send it to users list as well.

> Hello,
>
> Recently Intel notify us about TinyCrypt end of life because Zephyr is
> one major project still using it.
>
> In order to respond it properly, the Zephyr PSIRT team needs to
> understand how TinyCrypt is currently used on Zephyr. An
> initial research shows that only the Bluetooth subsystem depends
> (exclusively) on this library for hashing and elliptic curves.
>
> We need the community feedback to know which other places are using
> TinyCrypt, which features are being used and finally what is the most
> constraint platform currently supported that is using TinyCrypt.
>
> Based on the answers we will come up with some proposals to mitigate
> this problem.
>
> Regards,
> Flavio Ceolin
>
>
>