sdkconfig: disable stub in esptool

The stub seems to break uploading from running firmware on newer
ESP-IDFs.

There's a better way to fix this by patching esptool.py, but this is
good enough for now.

https://www.esp32.com/viewtopic.php?t=10184#p42176

sdkconfig.p1

 CONFIG_APP_EXCLUDE_PROJECT_VER_VAR=y
 CONFIG_APP_EXCLUDE_PROJECT_NAME_VAR=y
 CONFIG_BOOTLOADER_LOG_LEVEL_WARN=y
+CONFIG_ESPTOOLPY_NO_STUB=y
 CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
 CONFIG_ESPTOOLPY_FLASHSIZE_8MB=y
 CONFIG_ESPTOOLPY_AFTER_NORESET=y

sdkconfig.p3

 CONFIG_APP_EXCLUDE_PROJECT_VER_VAR=y
 CONFIG_APP_EXCLUDE_PROJECT_NAME_VAR=y
 CONFIG_BOOTLOADER_LOG_LEVEL_WARN=y
+CONFIG_ESPTOOLPY_NO_STUB=y
 CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
 CONFIG_ESPTOOLPY_FLASHSIZE_8MB=y
 CONFIG_ESPTOOLPY_AFTER_NORESET=y

sdkconfig.p4

 CONFIG_APP_EXCLUDE_PROJECT_VER_VAR=y
 CONFIG_APP_EXCLUDE_PROJECT_NAME_VAR=y
 CONFIG_BOOTLOADER_LOG_LEVEL_WARN=y
+CONFIG_ESPTOOLPY_NO_STUB=y
 CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
 CONFIG_ESPTOOLPY_FLASHSIZE_8MB=y
 CONFIG_ESPTOOLPY_AFTER_NORESET=y

sdkconfig.p6

 CONFIG_APP_EXCLUDE_PROJECT_VER_VAR=y
 CONFIG_APP_EXCLUDE_PROJECT_NAME_VAR=y
 CONFIG_BOOTLOADER_LOG_LEVEL_WARN=y
+CONFIG_ESPTOOLPY_NO_STUB=y
 CONFIG_ESPTOOLPY_FLASHMODE_QIO=y
 CONFIG_ESPTOOLPY_FLASHSIZE_8MB=y
 CONFIG_ESPTOOLPY_AFTER_NORESET=y