Tweak perfprofd sepolicy to include ipc_lock self capability.

Bug: http://b/19483574
Change-Id: Id39a5aaf531d2a75a22647bdafb34a6ef18201c8
(cherry picked from commit 728fe3d4918aa0308d6c7167c3d72ef299250d17)
diff --git a/perfprofd.te b/perfprofd.te
index c9f7f35..03e55f5 100644
--- a/perfprofd.te
+++ b/perfprofd.te
@@ -47,4 +47,7 @@
   # simpleperf is going to execute "sleep"
   allow perfprofd toolbox_exec:file x_file_perms;
 
+  # needed for simpleperf on some kernels
+  allow perfprofd self:capability ipc_lock;
+
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