- init the led pin as output (like other HALs)
- reduce sdio dma priority to normal.. highest is never the best...
- allow fsmc only on compatible STM32F1 (like HAL fsmc)
- fsmc: remove an useless C style cast

- Fix the `fsmc` and `sdio` units which required hard defines for use.

- This mode is often used/preferred to drive printer boards' MOSFETs.
- Can generally boost the allowed output power (for hotbed,nozzle and fans).

If `openFile` is given `true`, then it has read-only access. Because all the writing occurs on the next line, this breaks SD card as EEPROM.

Fix #13445

Allow `ENABLED`, `DISABLED`, `PIN_EXISTS`, and `BUTTON_EXISTS` to take multiple arguments. Also add:
- Alias `ANY(...)` for `!DISABLED(...)`
- Alias `ANY_PIN(...)` for `PIN_EXISTS(a) || PIN_EXISTS(b) ...`
- Alias `EITHER(A,B)` for `ANY(...)`
- Alias `ALL(...)` and `BOTH(A,B)` for `ENABLED(...)`
- `NONE(...)` for `DISABLED(...)`

See https://github.com/pinchies/Marlin/pull/1#issuecomment-471388743

Should fix "spontanous heating" problems due to order of operations error. Error occurs at least with ststm32 v5.1.0 in PlatformIO.