network.bb: Add sdeventplus

The phosphor-networkd repo is being updated to use sdeventplus.
Add it as a build-time dependency.

Change-Id: Ic4e74e5164ff3c2b4d90f5fd5b54fe7794a0b446
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/recipes-phosphor/network/network.bb b/recipes-phosphor/network/network.bb
index 3170d56..527d1b3 100644
--- a/recipes-phosphor/network/network.bb
+++ b/recipes-phosphor/network/network.bb
@@ -14,6 +14,7 @@
 DEPENDS += "systemd"
 DEPENDS += "autoconf-archive-native"
 DEPENDS += "sdbusplus sdbusplus-native"
+DEPENDS += "sdeventplus"
 DEPENDS += "phosphor-dbus-interfaces phosphor-dbus-interfaces-native"
 DEPENDS += "phosphor-logging"
 DEPENDS += "libnl"