phosphor-mapper.bb: bump version

Change-Id: I50b41c78660f5628af53746931a7688156bd756a
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/meta-phosphor/common/recipes-phosphor/dbus/phosphor-mapper.bb b/meta-phosphor/common/recipes-phosphor/dbus/phosphor-mapper.bb
index 4662815..c712377 100644
--- a/meta-phosphor/common/recipes-phosphor/dbus/phosphor-mapper.bb
+++ b/meta-phosphor/common/recipes-phosphor/dbus/phosphor-mapper.bb
@@ -24,7 +24,7 @@
         "
 SRC_URI += "git://github.com/openbmc/phosphor-objmgr"
 
-SRCREV = "d43087f294949583507b5520c8f0b2c359296aa1"
+SRCREV = "981f2661defa193aa1a27cfe078d8f12002ca3c2"
 
 S = "${WORKDIR}/git"