Fix UI of testing TDLS in Dev Tools app

The "Stop TDLS" button won't show up on smaller screens such as N4/N5. Fixed
by changing the layout.

Change-Id: I708376468eea5b053a7ed15ec5cebb18393ba235
diff --git a/apps/Development/res/layout/connectivity.xml b/apps/Development/res/layout/connectivity.xml
index 53f1ed7..a3a3dcf 100644
--- a/apps/Development/res/layout/connectivity.xml
+++ b/apps/Development/res/layout/connectivity.xml
@@ -219,6 +219,15 @@
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:text="@string/start_tdls" />
+        <Button android:id="@+id/stopTdls"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="@string/stop_tdls" />
+    </LinearLayout>
+    <LinearLayout
+      android:orientation="horizontal"
+      android:layout_width="match_parent"
+      android:layout_height="wrap_content">
         <TextView
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
@@ -227,10 +236,6 @@
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:minEms="10" />
-        <Button android:id="@+id/stopTdls"
-          android:layout_width="wrap_content"
-          android:layout_height="wrap_content"
-          android:text="@string/stop_tdls" />
     </LinearLayout>
 
     <!-- divider line -->