build: fix nlohmann-json dependency

Previously the json dependency was only added when `json-control` or
`json-config` options were enabled, but there is now base code that
utilizes nlohmann-json directly (such as logger.hpp).  Add the
dependency at the top level.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: Ia92e54f9bd4812af0977bcfa5479f093f7bdbc67
diff --git a/presence/meson.build b/presence/meson.build
index d3028d6..7237565 100644
--- a/presence/meson.build
+++ b/presence/meson.build
@@ -19,11 +19,12 @@
 ]
 
 deps=[
+    json_dep,
     libevdev_dep,
     phosphor_dbus_interfaces_dep,
     phosphor_logging_dep,
     sdbusplus_dep,
-    sdeventplus_dep
+    sdeventplus_dep,
 ]
 
 # Only needed for YAML config