Include MPU type in firmware version info

I'm told that because I'm still running the original MPU for a 2017 (ie, I haven't upgraded the hardware) firmware updates for my 2017 Model S 75 with v3 autopilot hardware will be very few and far between and that 2021.24.25.1 is the latest and greatest. There isn't a safety score even available with this version of firmware. I wonder how many other cars there are with the latest autopilot hardware and 'old' MPU that might have the same or newer firmware than mine.