config.xml: pin SurfaceFlinger

as ag/13364183, system_service needs read access SurfaceFlinger.
Pin it by pinner when booting.

Bug: 193442970
Test: adb shell dumpsys pinner
 - SurfaceFlinger pinned
 --
    /system/bin/surfaceflinger 7028736
 --

Change-Id: I2cae8f87a09b4871cf967fe8a3c01fb9015d58cb
diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index b4b8188..e7d3bd2 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -228,6 +228,7 @@
         <item>"/apex/com.android.media/javalib/updatable-media.jar"</item>
         <item>"/system/framework/framework.jar"</item>
         <item>"/system/framework/services.jar"</item>
+        <item>"/system/bin/surfaceflinger"</item>
         <item>"/system_ext/priv-app/SystemUIGoogle/SystemUIGoogle.apk"</item>
     </string-array>