Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Add UnixBench benchmarking role"
  - Add UnixBench benchmarking role

    Change-Id: I14e1630ff67bf4dff0998456e57fee2b1656f585
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 4877090..5da68bf 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 48770903149a800d5cc9ddecc490001ffd9688a8
+Subproject commit 5da68bf0911e12237a3484e4160f959933f26c9a