phosphor-networkd-rev.bbclass: bump version

Change-Id: Ibc37bf5129324cee1e32300d1691a4a2c2c71dca
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/classes/phosphor-networkd-rev.bbclass b/classes/phosphor-networkd-rev.bbclass
index 8254151..97c48ae 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 = "d475cd63286ec7b3f74c3959cabaa292b6648265"
+SRCREV = "210420aac714483ea4c1e8a303280df9c1b4e5c9"