Switch FSI clock to synchronous mode on a disable

Before unloading the FSI Driver, switch the master P9's
FSI clock back to synchronous mode.

Change-Id: I6309ad08c48cb5f272389925ea19b8cf7f8333d0
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/fsi/op-fsi/fsi-disable.service b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/fsi/op-fsi/fsi-disable.service
index a58af04..aa0b2e3 100644
--- a/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/fsi/op-fsi/fsi-disable.service
+++ b/meta-openbmc-machines/meta-openpower/common/recipes-phosphor/fsi/op-fsi/fsi-disable.service
@@ -3,6 +3,7 @@
 Conflicts=fsi-enable.service
 
 [Service]
+ExecStart=/usr/sbin/openpower-proc-control setSyncFSIClock
 ExecStart=/bin/sh -c "echo fsi-master > /sys/bus/platform/drivers/fsi-master-gpio/unbind"
 Type=oneshot
 RemainAfterExit=yes