Add flag com.android.tethering.mainline.beta.lnp_developer_opt_in to trunk_staging.

This change was automatically created by advancing the Gantry workflow at:
https://releasetracker.partner.android.com/changes/147kjbq000001?build_unique_id=com.android.tethering.mainline.beta.lnp_developer_opt_in-platform
Do not edit this file manually or revert this change - use the Gantry workflow to manage the state of this flag.

Bug: 421952907
Flag: com.android.tethering.mainline.beta.lnp_developer_opt_in
Ignore-AOSP-First: AConfig change for future AOSP release
Change-Id: I0be2e834a53c48f6f8bc3877ee3adfcb1a09ccea
diff --git a/aconfig/trunk_staging/com.android.tethering.mainline.beta/lnp_developer_opt_in_flag_values.textproto b/aconfig/trunk_staging/com.android.tethering.mainline.beta/lnp_developer_opt_in_flag_values.textproto
new file mode 100644
index 0000000..949919c
--- /dev/null
+++ b/aconfig/trunk_staging/com.android.tethering.mainline.beta/lnp_developer_opt_in_flag_values.textproto
@@ -0,0 +1,6 @@
+flag_value {
+  package: "com.android.tethering.mainline.beta"
+  name: "lnp_developer_opt_in"
+  state: ENABLED
+  permission: READ_WRITE
+}