wifi: fix wifi rx fails

1. add MAC reset.
2. update libphy.a from 4000 to 4006.

diff --git a/components/esp32/lib b/components/esp32/lib
index 2282e7a684c329cebb67201989f4bd47b3623acc..a44e39fc0d6be983608d1ed17e6f43fe896ae3de 160000 (submodule)
--- a/components/esp32/lib
+++ b/components/esp32/lib
@@ -1 +1 @@
-Subproject commit 2282e7a684c329cebb67201989f4bd47b3623acc
+Subproject commit a44e39fc0d6be983608d1ed17e6f43fe896ae3de