Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Collect dpi metrics and report"
  - Collect dpi metrics and report

    Change-Id: I0e02cff9a5bfc123b3227803289fc03abe27f112
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 86f10e3..2d55ca2 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 86f10e318baa875d2b729f3bf7b5bb588a43f4ff
+Subproject commit 2d55ca2996755ea25012001e499c4ac0dc54b765