Devicetree DTS and YAML format improvements (#492)

* **DevicetreeCompiler**
  * Binding properties now support default values.
  * Compiler returns meaningful exit codes and reports errors more clearly.
  * Stronger validation of device configurations with unified error handling.
  * Added integration tests and a dedicated Devicetree test workflow.

* **Changes**
  * Platform binding schemas updated: some fields made required, others gained explicit defaults.
  * Many device-tree files simplified by removing unused/placeholder pin and transfer-size entries.

* **Documentation**
  * Removed several outdated TODO items.

.github/workflows/tests.yml

@@ -6,7 +6,7 @@ on:
   pull_request:
     types: [ opened, synchronize, reopened ]
 jobs:
-  run:
+  TactilityTests:
     runs-on: ubuntu-latest
     steps:
       - name: "Checkout repo"
@@ -27,3 +27,17 @@ jobs:
         run: build/Tests/Tactility/TactilityTests
       - name: "Run TactilityKernel Tests"
         run: build/Tests/TactilityKernel/TactilityKernelTests
+  DevicetreeTests:
+    runs-on: ubuntu-latest
+    steps:
+      - name: "Checkout repo"
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: "Install Python Dependencies"
+        shell: bash
+        run: pip install lark==1.3.1 pyyaml==6.0.3
+      - name: "Run Devicetree Tests"
+        shell: bash
+        working-directory: Buildscripts/DevicetreeCompiler/tests
+        run: python test_integration.py