Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Merge "Switch to upstream daisy's master branch"
  - Switch to upstream daisy's master branch

    Change-Id: I7a88d8b65168356420aee2042ac3902834633477
    Signed-off-by: Zhijiang Hu <hu.zhijiang@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index a6f090d..af5ccd5 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit a6f090d79c2d9152c05ebe606eedfb80d4ea492b
+Subproject commit af5ccd55863bd86f4ea6e71a161e2ffd5c964bdc