phosphor-ipmi-host: Units can depend on xyz.openbmc_project.Control.Host

Expose an alias so if other units depend on the DBus presence of ipmid
they can explicitly depend on it.

(From meta-phosphor rev: beb3181dac206700ce9ab5253448f877b4420b7c)

Change-Id: Ic72d56969edc83422ee7c79d6d7bbb6fc7c8197f
Signed-off-by: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/phosphor-ipmi-host.service b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/phosphor-ipmi-host.service
index 8beb732..62687d6 100644
--- a/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/phosphor-ipmi-host.service
+++ b/meta-phosphor/recipes-phosphor/ipmi/phosphor-ipmi-host/phosphor-ipmi-host.service
@@ -26,3 +26,4 @@
 
 [Install]
 WantedBy=multi-user.target
+Alias=xyz.openbmc_project.Control.Host.service