mpdecision: Enable mpdecision for msm8226.

Added mpdecision service to init.target.rc.

Change-Id: I0c726481978dfc38cafc9e8e4779e547d23326b9
diff --git a/init.target.rc b/init.target.rc
index 8c0ac35..75f235e 100644
--- a/init.target.rc
+++ b/init.target.rc
@@ -62,6 +62,10 @@
    user root
    group root
 
+service mpdecision /system/bin/mpdecision --no_sleep --avg_comp
+   user root
+   disabled
+
 service thermal-engine /system/bin/thermal-engine
    class main
    user root