stm32/sdcard: Add switch break to ensure only correct SD/MMC IRQ is run.
stm32/sdcard: Add switch break to ensure only correct SD/MMC IRQ is run.

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