meta-phosphor: ipmi-kcs: point service to bindir

The executable no longer lives in sbindir and now lives in bindir.
Update the service file accordingly.

Change-Id: Ie07fda8af8e432108a1bbeed871c271b5bfc1ded
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/recipes-phosphor/ipmi/phosphor-ipmi-kcs/org.openbmc.HostIpmi.service b/recipes-phosphor/ipmi/phosphor-ipmi-kcs/org.openbmc.HostIpmi.service
index 0c108fb..fbe9380 100644
--- a/recipes-phosphor/ipmi/phosphor-ipmi-kcs/org.openbmc.HostIpmi.service
+++ b/recipes-phosphor/ipmi/phosphor-ipmi-kcs/org.openbmc.HostIpmi.service
@@ -3,7 +3,7 @@
 
 [Service]
 Restart=always
-ExecStart={sbindir}/kcsbridged --d="/dev/{KCS_DEVICE}"
+ExecStart={bindir}/kcsbridged --d="/dev/{KCS_DEVICE}"
 Type=dbus
 BusName={BUSNAME}