Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Implement a sample qpi report to show how to retrieve variables from benchmark results

    Change-Id: I479e4446c18d45d69d2f88db021f7739201104d9
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 5bdc99e..940b64d 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 5bdc99ef0f7897b7ea7e62b9db733e8cbf7adaa8
+Subproject commit 940b64dfbb9992c77d1c888719d5b30a212e8f4f