Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Load benchmark specification from external file

    Change-Id: If72f1d98b90f9666c17aa28b3b88f32178ee4166
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 550a975..6d62594 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 550a975949328619139631e363c3bc1b48411402
+Subproject commit 6d6259490b9c0897ba493070516600fcff94b312