Merge branch 'bugfix/fix_some_wifi_bugs_0131_v3.1' into 'release/v3.1'

esp32: fix some wifi bugs  (backport v3.1)

See merge request idf/esp-idf!4219
This commit is contained in:
Jiang Jiang Jian
2019-02-15 12:15:04 +08:00