Add optional notifyThresholdChanged API

Bump thermal HAL to v3

Bug: 360486877
Flag: EXEMPT AIDL interface changes
Test: atest VtsHalThermalTargetTest
Change-Id: I3954301c11351153f2df1d111f7fe2439cc16aae
diff --git a/thermal/aidl/Android.bp b/thermal/aidl/Android.bp
index 597a166..db77783 100644
--- a/thermal/aidl/Android.bp
+++ b/thermal/aidl/Android.bp
@@ -48,8 +48,7 @@
             version: "2",
             imports: [],
         },
-
     ],
-    frozen: true,
+    frozen: false,
 
 }