esp_wifi: optimize coexistence sleep

1. Increase delay time before sending NULL1 to enter sleep to
       fix compatible problem of some APs.
    2. Do not force sending NULL0 if no data tx/rx in previous Wi-Fi
       slice.
This commit is contained in:
Xia Xiaotian
2020-03-23 15:06:31 +08:00
parent 16d6604ab4
commit 3488603002