sdbusplus: srcrev bump ddc57bdf9d..9688ed6855

Ed Tanous (8):
      Remove static keyword from template
      Add missing override keyword on mock
      Add support for appending std::string_view
      Remove some extra semi-colons in tests
      Remove dead code paths
      Remove static from inline variables
      Fix meson warning
      Add override keyword everywhere it's required

Change-Id: Ic39508d02b6ef51097117f0a9bb2c4b1a3c7979d
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
diff --git a/meta-phosphor/recipes-extended/sdbusplus/sdbusplus-rev.inc b/meta-phosphor/recipes-extended/sdbusplus/sdbusplus-rev.inc
index e7c880d..b1ec948 100644
--- a/meta-phosphor/recipes-extended/sdbusplus/sdbusplus-rev.inc
+++ b/meta-phosphor/recipes-extended/sdbusplus/sdbusplus-rev.inc
@@ -3,4 +3,4 @@
 PV ?= "1.0+git${SRCPV}"
 
 SRC_URI += "git://github.com/openbmc/sdbusplus;branch=master;protocol=https"
-SRCREV = "ddc57bdf9d81819eac3c9fad762102894417cc69"
+SRCREV = "9688ed6855483f2ba9f09f70f416f412d28c520a"