Add UPower Device interface

Add a YAML description of the UPower Device interface defined at
https://upower.freedesktop.org/docs/Device.html

Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
Change-Id: Ib70d6525b913cf06da4e93a53e332487126f1db0
diff --git a/gen/org/freedesktop/UPower/meson.build b/gen/org/freedesktop/UPower/meson.build
new file mode 100644
index 0000000..5569eff
--- /dev/null
+++ b/gen/org/freedesktop/UPower/meson.build
@@ -0,0 +1,15 @@
+# Generated file; do not modify.
+subdir('Device')
+generated_others += custom_target(
+    'org/freedesktop/UPower/Device__markdown'.underscorify(),
+    input: [ '../../../../yaml/org/freedesktop/UPower/Device.interface.yaml',  ],
+    output: [ 'Device.md' ],
+    command: [
+        sdbuspp_gen_meson_prog, '--command', 'markdown',
+        '--output', meson.current_build_dir(),
+        '--tool', sdbusplusplus_prog,
+        '--directory', meson.current_source_dir() / '../../../../yaml',
+        'org/freedesktop/UPower/Device',
+    ],
+)
+