nrf/hal/nvmc: Remove pre-compiler error thrown in nvmc.h, if on nrf52.
nrf/hal/nvmc: Remove pre-compiler error thrown in nvmc.h, if on nrf52.

This has been tested and works.

tobbad/micropython,pozetroninc/micropython,pfalcon/micropython,selste/micropython,trezor/micropython,adafruit/circuitpython,pfalcon/micropython,kerneltask/micropython,tobbad/micropython,adafruit/circuitpython,pramasoul/micropython,kerneltask/micropython,selste/micropython,henriknelson/micropython,henriknelson/micropython,adafruit/circuitpython,bvernoux/micropython,MrSurly/micropython,selste/micropython,adafruit/circuitpython,bvernoux/micropython,tobbad/micropython,tobbad/micropython,henriknelson/micropython,pozetroninc/micropython,pozetroninc/micropython,pramasoul/micropython,pramasoul/micropython,henriknelson/micropython,pfalcon/micropython,trezor/micropython,bvernoux/micropython,pfalcon/micropython,kerneltask/micropython,trezor/micropython,kerneltask/micropython,MrSurly/micropython,trezor/micropython,MrSurly/micropython,selste/micropython,pozetroninc/micropython,henriknelson/micropython,pfalcon/micropython,tobbad/micropython,kerneltask/micropython,selste/micropython,bvernoux/micropython,MrSurly/micropython,adafruit/circuitpython,trezor/micropython,pramasoul/micropython,MrSurly/micropython,adafruit/circuitpython,bvernoux/micropython,pozetroninc/micropython,pramasoul/micropython