Enable nlohmann JSON Dependency for networkd

- This commit enables the nlohman JSON development header
  files for compiling the phosphor-netword service.

(From meta-phosphor rev: 7239aaa69c1541855b10ddd1d930fcd086a3bf94)

Signed-off-by: Manojkiran Eda <manojkiran.eda@gmail.com>
Change-Id: I05df06e7da357213cbccec825666daa322f936d5
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/meta-phosphor/recipes-phosphor/network/phosphor-network_git.bb b/meta-phosphor/recipes-phosphor/network/phosphor-network_git.bb
index 3d44910..72f49a5 100644
--- a/meta-phosphor/recipes-phosphor/network/phosphor-network_git.bb
+++ b/meta-phosphor/recipes-phosphor/network/phosphor-network_git.bb
@@ -20,6 +20,7 @@
 DEPENDS += "phosphor-logging"
 DEPENDS += "libnl"
 DEPENDS += "stdplus"
+DEPENDS += "nlohmann-json"
 
 PACKAGECONFIG ??= "uboot-env"