fix qtpy_esp32s3_nopsram neopixel pins

[todbot]

This PR adjusts the values for NEOPIXEL and NEOPIXEL_POWER in board.c and mpconfigboard.h to match those in tinyuf2's adafruit_qtpy_esp32s3/board.h

Currently this code does not light the built-in NeoPixel LED:

import board, digitalio
ledpower = digitalio.DigitalInOut(board.NEOPIXEL_POWER)
ledpower.switch_to_output(value=True)
leds = neopixel.NeoPixel(board.NEOXPIXEL, 1, brightness=0.1)
leds.fill(0xff00ff)

but this code does:

import microcontroller, digitalio
ledpower = digitalio.DigitalInOut(microcontroller.pin.GPIO38)
ledpower.switch_to_output(value=True)
leds = neopixel.NeoPixel(microcontroller.pin.GPIO39, 1, brightness=0.1)
leds.fill(0xff00ff)

[ladyada]

woops this is right - i changed it in rev C and didnt catch it