stm32/sdcard: Fix H7 build when using SDMMC2.
stm32/sdcard: Fix H7 build when using SDMMC2.

Changes are:
- Fix missing IRQ handler when SDMMC2 is used instead of SDMMC1 with H7
  MCUs.
- Removed outdated H7 series compatibility macros.
- Defined common IRQ handler macro for F4 series.

MrSurly/micropython,MrSurly/micropython,bvernoux/micropython,MrSurly/micropython,adafruit/circuitpython,MrSurly/micropython,henriknelson/micropython,adafruit/circuitpython,adafruit/circuitpython,bvernoux/micropython,henriknelson/micropython,henriknelson/micropython,henriknelson/micropython,adafruit/circuitpython,adafruit/circuitpython,MrSurly/micropython,bvernoux/micropython,bvernoux/micropython,adafruit/circuitpython,henriknelson/micropython,bvernoux/micropython