Watchdog: Enable Host Watchdog during early poweron

Enabling the Host Watchdog during early power on was
inadvertently removed and this change is bringing that back on.

Fixes openbmc/openbmc#1888

Change-Id: Ib2220e762379360742dee4a11c06f01a6060fbbe
Signed-off-by: Vishwanatha Subbanna <vishwa@linux.vnet.ibm.com>
diff --git a/common/recipes-phosphor/watchdog/phosphor-watchdog/obmc-enable-host-watchdog@.service b/common/recipes-phosphor/watchdog/phosphor-watchdog/obmc-enable-host-watchdog@.service
new file mode 100644
index 0000000..1fc88f3
--- /dev/null
+++ b/common/recipes-phosphor/watchdog/phosphor-watchdog/obmc-enable-host-watchdog@.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=Start Watchdog%i
+Wants=obmc-host-started@%i.target
+After=obmc-host-started@%i.target
+Wants=mapper-wait@-xyz-openbmc_project-watchdog-host%i.service
+After=mapper-wait@-xyz-openbmc_project-watchdog-host%i.service
+Conflicts=obmc-host-stop@%i.target
+
+[Service]
+Type=oneshot
+ExecStart={sbindir}/mapper call /xyz/openbmc_project/watchdog/host%i org.freedesktop.DBus.Properties Set ssv xyz.openbmc_project.State.Watchdog Enabled b true