qcom-common: ondemand: Modify Sampling Down Factor to 2

Change needed to help improve frequency scaling
in ondemand governor. Sampling Down Factor
is set to 2 in the init.qcom.post_boot.sh

Change-Id: I1f8eb4fabce24ed7076251f2cc1ac96e8dc79dd4
diff --git a/rootdir/etc/init.qcom.post_boot.sh b/rootdir/etc/init.qcom.post_boot.sh
index db01738..7a00e1f 100644
--- a/rootdir/etc/init.qcom.post_boot.sh
+++ b/rootdir/etc/init.qcom.post_boot.sh
@@ -306,7 +306,7 @@
         echo 50000 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_rate
         echo 90 > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
         echo 1 > /sys/devices/system/cpu/cpufreq/ondemand/io_is_busy
-        echo 4 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_down_factor
+        echo 2 > /sys/devices/system/cpu/cpufreq/ondemand/sampling_down_factor
         echo 10 > /sys/devices/system/cpu/cpufreq/ondemand/down_differential
         echo 300000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
         echo 300000 > /sys/devices/system/cpu/cpu1/cpufreq/scaling_min_freq