pkg/wakaama: use ztimer

[leandrolanzieri]

Contribution description

This changes the platform adaption for Wakaama to use ztimer (ZTIMER_SEC) instead of xtimer.

Testing procedure

• The example application should work as usual. Nodes should update their registration before it expires.

Issues/PRs references

Ticks an item of #13667

[fjmolinas]

The example application should work as usual. Nodes should update their registration before it expires.

What is the expiry time?

[leandrolanzieri]

The example application should work as usual. Nodes should update their registration before it expires.

What is the expiry time?

The registration lifetime, which currently defaults to 300 seconds (https://doc.riot-os.org/group__lwm2m__client__config.html#gad11a3c875f5a688dad541aca7e137b27)

[fjmolinas]

The example application should work as usual. Nodes should update their registration before it expires.

What is the expiry time?

The registration lifetime, which currently defaults to 300 seconds (https://doc.riot-os.org/group__lwm2m__client__config.html#gad11a3c875f5a688dad541aca7e137b27)

I can see it updated before expiry but not exactly at 5min, is that a problem?

[fjmolinas]

The example application should work as usual. Nodes should update their registration before it expires.

What is the expiry time?

The registration lifetime, which currently defaults to 300 seconds (https://doc.riot-os.org/group__lwm2m__client__config.html#gad11a3c875f5a688dad541aca7e137b27)

I can see it updated before expiry but not exactly at 5min, is that a problem?

Same behaviour in master, so a non-issue.

[fjmolinas]

ACK!

[fjmolinas]

Please rebase once #17104 is in