phosphor-logging: srcrev bump bcf3b2a6c0..620ef38ce4

Andrew Geissler (2):
      ensure persist dir created for quiesce tests
      ensure time delay in time based test

Matt Spinler (1):
      Add code coverage for unit tests

Change-Id: I0454c25c522beaf12d0e28255f3a7c91ee46ecae
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
diff --git a/recipes-phosphor/logging/phosphor-logging_git.bb b/recipes-phosphor/logging/phosphor-logging_git.bb
index 90d650a..7599f08 100644
--- a/recipes-phosphor/logging/phosphor-logging_git.bb
+++ b/recipes-phosphor/logging/phosphor-logging_git.bb
@@ -56,7 +56,7 @@
 "
 
 SRC_URI += "git://github.com/openbmc/phosphor-logging"
-SRCREV = "bcf3b2a6c0c3b319e41a143415abd2316db87efc"
+SRCREV = "620ef38ce4225298d3f8efd368c80dd732a1d4b8"
 
 S = "${WORKDIR}/git"