The module previously called net_ieee802154 is renamed to capture that
it is about interacting the frames and headers, and moved "into" the new
topic in the documentation tree.
Exceptions for undocumented headers are updated.
This is purely to finally unblock RIOT-OS/riotdocker#104, but may also
be useful to add future exclude patterns.
Exclude file was generated using
```sh
make doc 2> dist/tools/doccheck/exclude_patterns_base
grep "^${PWD}" dist/tools/doccheck/exclude_patterns_base | \
sed -E -e "s#^${PWD}/(.*:)([0-9]+): #\1DIGITS_MAGIC: #" \
-e 's/[]\\.$*{}|+?()[^-]/\\&/g' \
-e 's/:DIGITS_MAGIC:/:[0-9]+:/' \
> dist/tools/doccheck/exclude_patterns
rm dist/tools/doccheck/exclude_patterns_base
```
