Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Update QTIP index"
  - Update QTIP index

    Change-Id: I57ec7d8e2558ce27b6a6acad6a8ec6d9ee0080f7
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index d6974b1..7be99b4 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit d6974b109f00b5ff7ef76cf23d63d4227522b6fe
+Subproject commit 7be99b40106a0c585f953f6506480a2524a7711a