SurfaceFlinger: add stack guards around SurfaceFlinger::postComposition

This is a debug patch for b/119477596 to try to catch a stack
corruption.

Test: Monkey
Change-Id: I270ace2660de7bab4a58deb2088275c2acc81be4
diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index 3dee0c0..5b3bbca 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -55,6 +55,7 @@
         "libui",
         "libinput",
         "libutils",
+        "libutilscallstack",
     ],
     static_libs: [
         "libcompositionengine",