Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Fraser release notes"
  - Fraser release notes

    Change-Id: If619c1a8c2154f44cab1f9fe65ee9cf3b21949ac
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index f7ed2f2..c934821 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit f7ed2f20be7c848e3a79aaef2569d01a452bac77
+Subproject commit c934821173ff9adb5608d4df2418ac23fa0b8251