Fix include path for system/bt am: 2458191e9d

Original change: https://android-review.googlesource.com/c/platform/packages/apps/Test/connectivity/+/1883609

Change-Id: I5e24d10395d12f93e5e066fbf50c0736d3e43360
diff --git a/sl4n/Android.bp b/sl4n/Android.bp
index 5a98d03..8030b2d 100644
--- a/sl4n/Android.bp
+++ b/sl4n/Android.bp
@@ -14,7 +14,7 @@
         "libbluetooth_headers",
     ],
     include_dirs: [
-        "system/bt",
+        "packages/modules/Bluetooth/system",
     ],
     local_include_dirs: [
         "rapidjson/include",