Update git submodules

* Update docs/submodules/bottlenecks from branch 'master'
  - Fix path for util script in posca guide

    Change-Id: I957d2232ceafad45ec40f7f99e9b11629887b059
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/bottlenecks b/docs/submodules/bottlenecks
index 1baf04d..5c1e34c 160000 (submodule)
--- a/docs/submodules/bottlenecks
+++ b/docs/submodules/bottlenecks
@@ -1 +1 @@
-Subproject commit 1baf04d3b5f2348977dc3481fd2dd5fac181d84c
+Subproject commit 5c1e34c97ceaa2a3b5a0b8e032eb041c52858808