Driver improvements (#535)

- New drivers:
  - SD SPI
  - spi_peripheral
  - touch_placeholder
  - display_placeholder
- Devicetree compiler:
  - Implement phandle-arrays
  - Implement device addresses
- Add placeholder drivers to all devices with a SPI display
- SPI driver: add `cs-pins` and set them to high on driver start
- FileSystem: add `file_system_set_owner()` and `file_system_get_owner()`
- File locking is now checking if the related `FileSystem` is part of a shared SPI bus
- Add `device_get_child_count()`
- SDMMC driver: Remove default of `slot` value
- Fix for Crowpanel Basic 3.5" display (add delay to booting)
- Fix for LilyGO T-HMI SD card mounting (delayed mounting by disabling it initially in the dts)

TactilityKernel/include/tactility/error.h

@@ -24,6 +24,7 @@ typedef int error_t;
 #define ERROR_NOT_SUPPORTED 10
 #define ERROR_NOT_ALLOWED 11
 #define ERROR_BUFFER_OVERFLOW 12
+#define ERROR_OUT_OF_RANGE 13
 
 /** Convert an error_t to a human-readable text. Useful for logging. */
 const char* error_to_string(error_t error);