Allow dumpstate to read proc_pid_max and access profcollectd via binder

Now running ps requires the read permission for /proc/sys/kernel/pid_max.
Also, grant the binder_call permission for recently added profcollectd.

Bug: 170070222
Change-Id: I5bc0f89a0538091de40647777ff6bf47f47dc066
diff --git a/private/dumpstate.te b/private/dumpstate.te
index bb707c3..65a9cc3 100644
--- a/private/dumpstate.te
+++ b/private/dumpstate.te
@@ -31,6 +31,11 @@
 # Allow dumpstate to talk to idmap over binder
 binder_call(dumpstate, idmap);
 
+# Allow dumpstate to talk to profcollectd over binder
+userdebug_or_eng(`
+  binder_call(dumpstate, profcollectd)
+')
+
 # Collect metrics on boot time created by init
 get_prop(dumpstate, boottime_prop)