Update simpleperf path to /system/xbin/simpleperf.

Change-Id: Ib326b1669553146e028c8354bb5077176d150616
(cherry picked from commit 35bb6be739761482fa7e72214d2aedf2623cbb9a)
diff --git a/perfprofd/perfprofdcore.cc b/perfprofd/perfprofdcore.cc
index 0371692..69db208 100644
--- a/perfprofd/perfprofdcore.cc
+++ b/perfprofd/perfprofdcore.cc
@@ -178,7 +178,7 @@
                  "/data/data/com.google.android.gms/files");
 
   // Full path to 'perf' executable.
-  addStringEntry("perf_path", "/system/bin/simpleperf");
+  addStringEntry("perf_path", "/system/xbin/simpleperf");
 
   // Desired sampling period (passed to perf -c option). Small
   // sampling periods can perturb the collected profiles, so enforce