pkg/uwb-core: adjust holdoff time when rxdiag_enabled

[fjmolinas]

Contribution description

Currently if enabling uwb-core_rng_trx_info module (which enables RX_DIAGNOSTICS in the uwb-dw1000 package), then TWR exchange procedure fails since it adds some processing delay that is not accounter for in the holdoff time (time before a responder node answers to an initiator TWR request). This PR fixes it by accounting for that in the holdoff configuration values.

Testing procedure

The following fails in master: USEMODULE=uwb-core_rng_trx_info make -C examples/twr_aloha/ flash term -j7

> twr lst on
2022-04-25 13:13:11,759 # twr lst on
2022-04-25 13:13:11,761 # [twr]: start listening
2022-04-25 13:13:32,217 # twr req 03:B4 -p ds -c 5 -i 200
2022-04-25 13:13:32,218 # [twr]: start ranging
2022-04-25 13:13:32,432 # {"t": 32186, "src": "03:B4", "dst": "57:81", "d_cm": 56, "tof": 119.8907700, "los": 0, "rssi": 0}
2022-04-25 13:13:32,632 # {"t": 32386, "src": "03:B4", "dst": "57:81", "d_cm": 57, "tof": 121.8883286, "los": 0, "rssi": 0}
2022-04-25 13:13:32,832 # {"t": 32586, "src": "03:B4", "dst": "57:81", "d_cm": 62, "tof": 134.1226348, "los": 0, "rssi": 0}
2022-04-25 13:13:33,032 # {"t": 32786, "src": "03:B4", "dst": "57:81", "d_cm": 54, "tof": 116.6292953, "los": 0, "rssi": 0}
2022-04-25 13:13:33,232 # {"t": 32986, "src": "03:B4", "dst": "57:81", "d_cm": 58, "tof": 124.8940277, "los": 0, "rssi": 0}

Issues/PRs references

Split from #17988.

[kaspar030]

ACK. trusting your testing.

[fjmolinas]

Thanks!