phosphor-mapper.bb: bump version

Change-Id: I1a825ec9e47eb4888582a9230a70f55de6118619
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/common/recipes-phosphor/dbus/phosphor-mapper.bb b/common/recipes-phosphor/dbus/phosphor-mapper.bb
index b3493e9..4a8eb4e 100644
--- a/common/recipes-phosphor/dbus/phosphor-mapper.bb
+++ b/common/recipes-phosphor/dbus/phosphor-mapper.bb
@@ -35,7 +35,7 @@
         "
 SRC_URI += "git://github.com/openbmc/phosphor-objmgr"
 
-SRCREV = "1246924be23abb2f9e1460ae8a1a0b3cd1ceaae6"
+SRCREV = "7f42ad2a3f5cf2694e13c38d0089396aa3192ac8"
 
 S = "${WORKDIR}/git"