SmartConfig and ETH need some work to adapt to the new API

* Clean warnings when all warning enabled

Not used variables / functions due to debug log

Dual define with different values :
cores\esp32/binary.h
#define B110 6
#define B1000000 64

tools/sdk/include/newlib/sys/termios.h
#define B110        3
#define B1000000   23

Local variable returned in WiFiclient Secure

* change due to deprecated function

* Update with proper variable and label

* Update esp32-hal-i2c.c

* Apply changes requested

* Fix warnings due to #define conflict thanks @atanisoft

* Update BLE Library

* Fix SD driver

* Update toolchain

* Update IDF to e5b2c1c

The change intrdocues a local RAII helper to simplify maintaining begin/end scopes
Signed-off-by: NAndreas Pokorny <andreas.pokorny@siemens.com>

The card seems to need a bit of a nudge at boot to properly mount
sometimes.
Fixes: https://github.com/espressif/arduino-esp32/issues/272