Update submodules on '5.6' in qt5

Change-Id: Ib4bc5819e056a5571967aa9919d5a092834c28a7
Reviewed-by: Liang Qi <liang.qi@qt.io>

diff --git a/qtbase b/qtbase
index d16d56a..694702e 160000 (submodule)
--- a/qtbase
+++ b/qtbase
@@ -1 +1 @@
-Subproject commit d16d56a05ee9219ba6b7985b56a7bd69fb248875
+Subproject commit 694702e09d9b17d91db282784f009178cfb1059b

diff --git a/qtwebengine b/qtwebengine
index c4de6da..ba6acb2 160000 (submodule)
--- a/qtwebengine
+++ b/qtwebengine
@@ -1 +1 @@
-Subproject commit c4de6dafb00fdaf278d33798d709beb9fa7cfd78
+Subproject commit ba6acb2bc25add0f8b4490d8760b7ad1c1f27629