Merge branch 'feature/update_phy_library' into 'release/v2.1'

Feature/update phy library

See merge request sdk/ESP8266_RTOS_SDK!1158

Author: donghengqaz

VERSION

@@ -8,7 +8,7 @@ gwen:
     smartconfig:b971620
     wpa:        a8b0acd
     wps:        ff84a8b
-    phy:        1056_9
+    phy:        1057_9
 
 gitlab:
     driver:     7bee5263