Add missing layout params

Bug: 7370474
Change-Id: I632832be22c492f006d76bfa821fd9aa48569f67

Author: dsandler

packages/SystemUI/res/layout/quick_settings_brightness_dialog.xml

@@ -21,6 +21,8 @@
 
     <ImageView
         android:id="@+id/brightness_icon"
+	    android:layout_width="wrap_content"
+	    android:layout_height="wrap_content"
         android:layout_gravity="center_vertical"
         android:paddingRight="10dp"
         android:src="@drawable/ic_qs_brightness_auto_off"