thermal: Guard with soong namespace

Change-Id: I79cf6b2389c3e9b392b43143eee5cc72be82e25a
diff --git a/Android.bp b/Android.bp
index e10facc..2b04957 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,3 +1,6 @@
+soong_namespace {
+}
+
 soong_config_module_type {
 	name: "qti_thermal_hal_cc_defaults",
 	module_type: "cc_defaults",