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.

Buildscripts/DevicetreeCompiler/source/transformer.py

@@ -29,6 +29,7 @@ class DtsTransformer(Transformer):
     def device(self, tokens: list):
         node_name = None
         node_alias = None
+        status = None
         properties = list()
         child_devices = list()
         for index, item in enumerate(tokens):
@@ -37,10 +38,13 @@ class DtsTransformer(Transformer):
             elif type(item) is Token and item.type == 'NODE_ALIAS':
                 node_alias = item.value
             elif type(item) is DeviceProperty:
-                properties.append(item)
+                if item.name == "status":
+                    status = item.value
+                else:
+                    properties.append(item)
             elif type(item) is Device:
                 child_devices.append(item)
-        return Device(node_name, node_alias, properties, child_devices)
+        return Device(node_name, node_alias, status, properties, child_devices)
     def device_property(self, objects: List[object]):
         name = objects[0]
         # Boolean property has no value as the value is implied to be true