phosphor-networkd: Add stdplus dependency

Change-Id: I72fb766b2fb2956a7d6c48815c4fefa14f8dd7a3
Signed-off-by: William A. Kennington III <wak@google.com>
diff --git a/recipes-phosphor/network/phosphor-network_git.bb b/recipes-phosphor/network/phosphor-network_git.bb
index a4de745..2774774 100644
--- a/recipes-phosphor/network/phosphor-network_git.bb
+++ b/recipes-phosphor/network/phosphor-network_git.bb
@@ -19,6 +19,7 @@
 DEPENDS += "phosphor-dbus-interfaces phosphor-dbus-interfaces-native"
 DEPENDS += "phosphor-logging"
 DEPENDS += "libnl"
+DEPENDS += "stdplus"
 
 PACKAGECONFIG ??= "uboot-env"