Summary:
- I noticed that the latest ifconfig command shows nothing
- Finally, I found that gs2200m.c needs to handle SIOCGIFFLAGS
- This commit fixes this issue
Impact:
- gs2200m only
Testing:
- Tested with spresense:wifi
- NOTE: gs2200m_main.c will be updated later
Signed-off-by: Masayuki Ishikawa <Masayuki.Ishikawa@jp.sony.com>