Add Thermal HAL VTS

Bug: 32022734
Test: vts
Change-Id: I29ecd8b9da8275674343bce73c9f9deb20692bf2
diff --git a/thermal/Android.bp b/thermal/Android.bp
index ba90f2c..ed19a37 100644
--- a/thermal/Android.bp
+++ b/thermal/Android.bp
@@ -2,4 +2,5 @@
 subdirs = [
     "1.0",
     "1.0/default",
+    "1.0/vts/functional",
 ]