Add 'RRIOT_F722' target

[asteury]

[mmosca]

I have received the samples and will start the review soon.

[mmosca]

To track progress:

RRIOT_F722

• [x] Flash firmware
• [x] Calibrate accelerometer
• [x] Correct board orientation
• [x] Gyro working
• [x] Accelerometer working
• [x] Barometer working
• [ ] Magnetometer working
• [x] Voltage sensor working
• [x] Correct voltage scale
• [ ] Current sensor working (scale n/a, not AIO)
• [ ] UART 1 working (rx plug)
• [ ] UART 2 working (analog vtx plug)
• [ ] UART 3 working (gps plug)
• [ ] UART 4 working (hd vtx osd)
• [ ] UART 5 working (ESC Telemetry)
• [ ] UART 6 working (hd vtx sbus)
• [ ] Video chain working Camera -> OSD - > VTX
• [ ] ~LEDs working (no led pad)~
• [ ] S1-S4
  • [x] DSHOT
  • [ ] Motor order
• [ ] S5-S6
• [ ] Blackbox (Flash)
• [ ] Beeper working
• [ ] PIN IO (pit switch)

For reference:

[mmosca]

@asteury

The build is failing due to warnings caused by wrong entries in target.h

If you want to validate changes locallye, please run cmake -DWARNINGS_AS_ERRORS=ON to turn warnings as errors, like the github builds.