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)

Buildscripts/DevicetreeCompiler/source/binding_parser.py

@@ -45,6 +45,7 @@ def parse_binding(file_path: str, binding_dirs: list[str]) -> Binding:
             required=details.get('required', False),
             description=details.get('description', '').strip(),
             default=details.get('default', None),
+            element_type=details.get('element-type', None),
         )
         properties_dict[name] = prop
     filename = os.path.basename(file_path)