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)

Devices/m5stack-stackchan/Source/Configuration.cpp

@@ -1,7 +1,5 @@
 #include "devices/Display.h"
 #include "devices/Power.h"
-#include "devices/SdCard.h"
-#include <driver/gpio.h>
 
 #include <tactility/device.h>
 #include <tactility/drivers/i2c_controller.h>
@@ -243,7 +241,6 @@ static DeviceVector createDevices() {
         axp2101,
         std::make_shared<Axp2101Power>(axp2101),
         createPower(),
-        createSdCard(),
         createDisplay(),
     };
 }