Readd NewApi error

To make this consistent with aosp.

Bug: 320698986
Test: Presubmits
Change-Id: If7df796a7cbc38ef3c9f4327ffaf183af8bd1b8b
diff --git a/Tethering/Android.bp b/Tethering/Android.bp
index e2838fc..e4e6c70 100644
--- a/Tethering/Android.bp
+++ b/Tethering/Android.bp
@@ -82,6 +82,9 @@
         "framework-tethering.impl",
     ],
     manifest: "AndroidManifestBase.xml",
+    lint: {
+        error_checks: ["NewApi"],
+    },
 }
 
 // build tethering static library, used to compile both variants of the tethering.