init: enable qsync based idle fallback for crow

Change-Id: I54bacafca9f1850122667255f6a1e013ce022bfd
diff --git a/init/init.qti.display_boot.sh b/init/init.qti.display_boot.sh
index ba0a9f7..e18a1dc 100644
--- a/init/init.qti.display_boot.sh
+++ b/init/init.qti.display_boot.sh
@@ -109,6 +109,7 @@
         setprop vendor.display.enable_inline_writeback 0
         setprop vendor.display.timed_render_enable 1
         setprop debug.sf.disable_client_composition_cache 0
+        setprop vendor.display.enable_qsync_idle 1
         ;;
     esac
     ;;