Baseline Lint FlaggedApi violations

The Lint FlaggedApi checks are currently configured as warnings. Add
existing violations to baselines files to prepare for turning the
FlaggedApi checks into errors.

Bug: 303434307
Test: treehugger
Flag: EXEMPT not possible to flag baseline changes
Merged-In: I990ce57cd5cdac44ee8b93565b45aa15790ad697
Change-Id: I990ce57cd5cdac44ee8b93565b45aa15790ad697
diff --git a/Tethering/common/TetheringLib/Android.bp b/Tethering/common/TetheringLib/Android.bp
index 9fa073b..39a7540 100644
--- a/Tethering/common/TetheringLib/Android.bp
+++ b/Tethering/common/TetheringLib/Android.bp
@@ -58,6 +58,7 @@
     permitted_packages: ["android.net"],
     lint: {
         strict_updatability_linting: true,
+        baseline_filename: "lint-baseline.xml",
     },
     aconfig_declarations: [
         "com.android.net.flags-aconfig",