[posix] set addr gen mode to none on linux

[Irving-cl]

This PR sets the addr gen mode of wpan interface to NONE on linux.

This PR depends on #2410. #2410 needs to be merged first.

[codecov]

Codecov Report

Attention: Patch coverage is 75.80645% with 15 lines in your changes missing coverage. Please review.

Project coverage is 45.29%. Comparing base (2b41187) to head (056e46c).
Report is 748 commits behind head on main.

Files	Patch %	Lines
src/ncp/posix/netif_linux.cpp	80.43%	6 Missing and 3 partials ⚠️
src/ncp/posix/netif.cpp	57.14%	3 Missing ⚠️
tests/gtest/test_netif.cpp	66.66%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2419       +/-   ##
===========================================
- Coverage   55.77%   45.29%   -10.49%     
===========================================
  Files          87       99       +12     
  Lines        6890    11171     +4281     
  Branches        0      805      +805     
===========================================
+ Hits         3843     5060     +1217     
- Misses       3047     5863     +2816     
- Partials        0      248      +248     

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[wgtdkp]

This kind of netlink messages requires specially NET_ADMIN CAPS I think, ot-daemon on Android doesn't have those CAPS so those configurations are delegated to Android system_server. You probably want to enable this in ot-br-posix for non-Android linux devices.

(You can try your code in Android see what error it will be like :)

[Irving-cl]

(You can try your code in Android see what error it will be like

Thanks! As discussed, let's add a macro for the entire netif module and not enable it on Android. On Android, we will use the specific implementation for netif. I'll add a seperate PR for it.