cpu/samd21: avoid the use of bitfield #20713
Merged
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Contribution description
This PR replaces all calls of
foo->bar.bit.xyz = ABCD
tofoo->bar.reg &= ABCD
for all SAMDxx MCUsThis should not have much impact on the code.
Testing procedure
A careful review.
CI should catch most of the failure but feel free to run some tests on hardware.
Issues/PRs references
see #20457