esp32/s2/c3: pinctrl: dts: move pinctrl node out of SoC bus

On Espressif SoCs, the pin controller is a virtual device.
Pin settings are actually controlled in a distributed way.
Therefore, that node does not belong to the SoC bus.

Signed-off-by: Glauber Maroto Ferreira <glauber.ferreira@espressif.com>