Merge branch 'bugfix/wifi_fix_no_tbtt_after_rx_wrong_beacon_v3.1' into 'release/v3.1'

esp32: fix the bug that no TBTT will be generated anymore after receiving wrong beacon when WiFi and BT coexist. (backport v3.1)

See merge request idf/esp-idf!4718
This commit is contained in:
Jiang Jiang Jian
2019-04-08 21:22:03 +08:00