Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Add missing license header"
  - Add missing license header

    Change-Id: Ie6464f443ef4357f0aac13667ca7053194b4615b
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index e7a0cbd..b60f03b 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit e7a0cbd5222630ffc136bb6e3b15bdb6333d39b5
+Subproject commit b60f03b6fe525ab87a85662e4bb16a36b2b7c3b2