GPIO refactored (#495)

* **Refactor**
  * GPIO subsystem moved to a descriptor-based model for per-pin ownership and runtime pin management; many platform drivers now acquire/release descriptors.
  * Device trees and drivers now use GPIO phandle-style pin specifications across all boards and all drivers.

* **Behavior**
  * Device list now encodes per-device status (ok/disabled); boot will skip disabled devices accordingly.

* **Deprecation**
  * Legacy GPIO HAL marked deprecated and replaced with descriptor-based interfaces.

* **Chores**
  * Bindings and platform configs updated to the new GPIO pin-spec format.

Tactility/Include/Tactility/Tactility.h

@@ -7,6 +7,10 @@
 #include <Tactility/hal/Configuration.h>
 #include <Tactility/service/ServiceManifest.h>
 
+extern "C" {
+struct DtsDevice;
+}
+
 namespace tt {
 
 /** @brief The configuration for the operating system
@@ -21,9 +25,9 @@ struct Configuration {
  * @brief Main entry point for Tactility.
  * @param platformModule Platform module to start (non-null).
  * @param deviceModule Device module to start (non-null).
- * @param devicetreeDevices Null-terminated array where an entry { NULL, NULL } marks the end of the list.
+ * @param dtsDevices Array that is terminated with DTS_DEVICE_TERMINATOR
  */
-void run(const Configuration& config, Module* platformModule, Module* deviceModule, CompatibleDevice devicetreeDevices[]);
+void run(const Configuration& config, Module* platformModule, Module* deviceModule, struct DtsDevice dtsDevices[]);
 
 /**
  * While technically nullable, this instance is always set if tt_init() succeeds.