rootdir: init.rc: set perms for cpufreq governor boostpulse_duration

Change-Id: I09b9a1ed548e4ffe1232f583e8ff5f026760f616
diff --git a/rootdir/init.rc b/rootdir/init.rc
index caef358..0face12 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -293,6 +293,8 @@
     chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse
     chown system system /sys/devices/system/cpu/cpufreq/interactive/input_boost
     chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/input_boost
+    chown system system /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration
+    chmod 0660 /sys/devices/system/cpu/cpufreq/interactive/boostpulse_duration
 
     # Assume SMP uses shared cpufreq policy for all CPUs
     chown system system /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq