Rework LP pin traits

[bugadani]

Extracted from #6060

Changelog

esp-hal

• Fixed: set_analog and the touch pad setup no longer clear the open-drain bit of another pad on
  esp32, which numbers its low-power pads differently from its digital ones.
• Removed: gpio::LpPinWithResistors. gpio::LpPin now covers every low-power pad, and the pull
  resistors of a pad are reached through the driver instead.
• Changed: Ext1WakeupSource::new and RtcioWakeupSource::new take &mut dyn LpPin on every chip.

Migration guide

esp-hal/GPIO

LpPinWithResistors is replaced by LpPin

The trait held the pull resistor controls of a low-power pad. Those are internal to esp-hal now, so
one trait covers every low-power pad. Name LpPin in a bound or a trait object where you named
LpPinWithResistors:

-let wakeup_pins: &mut [(&mut dyn LpPinWithResistors, Level)] = &mut [
+let wakeup_pins: &mut [(&mut dyn LpPin, Level)] = &mut [
     (&mut peripherals.GPIO2, Level::Low),
     (&mut peripherals.GPIO3, Level::High),
 ];

 let ext1 = Ext1WakeupSource::new(wakeup_pins);

Use Input or Flex to set the pull resistors of a pad. A wake pad keeps the resistors that its
driver configured.