Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Optimize nDPI repeating speed"
  - Optimize nDPI repeating speed

    - check existence of target file for nDPI build task
    - skip git updating

    Change-Id: I7e91df0a38845b2ba8a2dec938b51e1ccc6554cc
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index fb60985..86f10e3 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit fb609850970d4d9596ade5368f169efc2f530261
+Subproject commit 86f10e318baa875d2b729f3bf7b5bb588a43f4ff