Wake on ext0 only if supported #17394
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ports/esp32: esp32.wake_on_ext0 should only be available on boards
that have SOC_PM_SUPPORT_EXT0_WAKEUP=y
docs/library/esp32.rst: update docs to reflect that wake_on_ext0
is only available for boards that have support for ext0
Summary
Having code wrapped by definitions of whether or not the capability is supported on the
board instead of what board it is, is better practice.
I introduced this so that when using the method wake_on_ext0 on boards that don't
support it, it will be clear that it is not supported, instead of silently failing.
Testing
I tested this on the ESP32C3
Merge this after #17393