Flag for prevent pairing state reset due to unrelated service discovery

Bug: 321996502
Bug: 315241296
Test: mma packages/modules/Bluetooth

Change-Id: Ia5074f64aa60509cee11d2b1e3511ae50c141be5

flags/btif_dm.aconfig

@@ -6,3 +6,10 @@ flag {
     description: "Bond type is not applicable for LE SMP pairing"
     bug: "319695663"
 }
+
+flag {
+    name: "reset_pairing_only_for_related_service_discovery"
+    namespace: "bluetooth"
+    description: "Don't reset the pairing state if service discovery concludes for a different device"
+    bug: "321996502"
+}