Add flag for LE audio private sharing via QR code.

Bug: 308368124
Test: Manual
Change-Id: I258add40bc5af14e45e066c2be32fc400e6e76e2
diff --git a/aconfig/settings_connecteddevice_flag_declarations.aconfig b/aconfig/settings_connecteddevice_flag_declarations.aconfig
index 450fc0d..07aaecc 100644
--- a/aconfig/settings_connecteddevice_flag_declarations.aconfig
+++ b/aconfig/settings_connecteddevice_flag_declarations.aconfig
@@ -13,3 +13,10 @@
   description: "Gates whether to enable LE audio sharing"
   bug: "305620450"
 }
+
+flag {
+  name: "enable_le_audio_qr_code_private_broadcast_sharing"
+  namespace: "pixel_cross_device_control"
+  description: "Gates whether to enable LE audio private broadcast sharing via QR code"
+  bug: "308368124"
+}