phosphor-networkd-rev.bbclass: bump version

Change-Id: I66378e1c63c8bef71d36e9aaf99fe73d1c5bec3c
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/classes/phosphor-networkd-rev.bbclass b/classes/phosphor-networkd-rev.bbclass
index 6b92ef5..933e06e 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 = "b46497fe9c2ec0fe7ed1784ee9a94b386ce6c403"
+SRCREV = "3681a503d79f9db5e81fa440af054817e728a4b4"