Merge branch 'bugfix/update_libphy_to_improve_11n_stability' into 'release/v3.0'

esp32: update libphy.a to v3663 to improve 11n TX stability (backport v3.0)

See merge request idf/esp-idf!2937
This commit is contained in:
Jiang Jiang Jian
2018-08-07 20:51:29 +08:00