meson: Add phosphor-dbus-interfaces dependency

This dependency was added with b15df6b2 but not added to meson.build,
which prevents the project from building in meson subproject mode.

Fixes: b15df6b28b97a0887e52d5f5e5899b10475943e1
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
Change-Id: I0653d6c7599cfcfc3d66c9e326a0a691bc6f978e
diff --git a/meson.build b/meson.build
index fe6e095..0ebde38 100644
--- a/meson.build
+++ b/meson.build
@@ -12,6 +12,7 @@
 )
 
 phosphor_logging = dependency('phosphor-logging')
+phosphor_dbus_interfaces = dependency('phosphor-dbus-interfaces')
 sdbusplus = dependency('sdbusplus')
 
 if get_option('tests').enabled()
@@ -73,6 +74,7 @@
     dependencies: [
         dependency('boost'),
         dependency('libsystemd'),
+        phosphor_dbus_interfaces,
         phosphor_logging,
         sdbusplus,
         dependency('systemd'),