phosphor-networkd-rev.bbclass: bump version

Change-Id: I19a7253fdeabbef63bd7421ea50843e74c8c7f8b
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/classes/phosphor-networkd-rev.bbclass b/classes/phosphor-networkd-rev.bbclass
index d3227d6..91eb3b6 100644
--- a/classes/phosphor-networkd-rev.bbclass
+++ b/classes/phosphor-networkd-rev.bbclass
@@ -1,2 +1,2 @@
 SRC_URI += "git://github.com/openbmc/phosphor-networkd"
-SRCREV = "e8fca1d5c14f3b665bcfe65de629d3a01f16f274"
+SRCREV = "2939f18e38d4f627a80b1f513ddb1fc717ddb566"