Use more Rusted Firmware-A (RF-A) crates

[Introducing Rusted Firmware-A (RF-A) - A Rust-Based reimagination of Trusted Firmware-A](https://www.trustedfirmware.org/blog/rf-a-blog)

[Rust Crates](https://review.trustedfirmware.org/admin/repos/q/filter:arm-firmware-crates/)

- [ ] arm-cci
- [ ] arm-ffa
- [ ] arm-fvp-base-pac
- [ ] arm-generic-timer
- [ ] arm-gic
- [ ] arm-pl011-uart
- [ ] arm-psci
- [ ] arm-sp805