Reduce minimum number of WiFi static tx buffer

Calibrate tx power after sending five packets

components/esp32/Kconfig

@@ -841,7 +841,7 @@ config ESP32_WIFI_TX_BUFFER_TYPE
 config ESP32_WIFI_STATIC_TX_BUFFER_NUM
     int "Max number of WiFi static TX buffers"
     depends on ESP32_WIFI_STATIC_TX_BUFFER
-    range 16 64
+    range 6 64
     default 32
     help
         Set the number of WiFi static TX buffers. Each buffer takes approximately 1.6KB of RAM.

components/esp32/lib

@@ -1 +1 @@
-Subproject commit 1f583184974518ad959c5510fff310170c6aaebd
+Subproject commit 3bf26ecbb28ca22fbfb205f45c1920ef3876b5d5