Update CMSIS_5 to 5.5.1

fpistm · fpistm · commit 374e2094a915 · 2019-03-29T15:45:52.000+01:00
Signed-off-by: Frederic.Pillon &lt;frederic.pillon@st.com&gt;
diff --git a/CMSIS_5 b/CMSIS_5
@@ -1 +1 @@
-Subproject commit 0b521765067ac87b142cd96b5f578ffb399090cc
+Subproject commit ca812421550b53a0bdd79139e255293ded03968f
