pseq: Add service file

Add service file for power control and power sequence monitoring
combined application. Change meson build files to support.

Signed-off-by: Jim Wright <jlwright@us.ibm.com>
Change-Id: I0c06b0b66c7d02145516564dc98123a4633498b3
diff --git a/services/phosphor-power-control.service b/services/phosphor-power-control.service
new file mode 100644
index 0000000..d58de9f
--- /dev/null
+++ b/services/phosphor-power-control.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=Phosphor Power Control
+
+[Service]
+Restart=always
+ExecStart=/usr/bin/phosphor-power-control
+
+[Install]
+WantedBy=multi-user.target