Increase mboxd sleep to 45s

Seeing intermittent issues with the hostboot SBE update
path.  See openbmc/openbmc#1045.

Change-Id: I57d583658d0ad2557a9b370a99ed91fec6f963fb
Signed-off-by: Andrew Geissler <andrewg@us.ibm.com>
diff --git a/common/recipes-phosphor/mboxd/mboxd/mboxd-reload@.service b/common/recipes-phosphor/mboxd/mboxd/mboxd-reload@.service
index 32cdd80..8a07d11 100644
--- a/common/recipes-phosphor/mboxd/mboxd/mboxd-reload@.service
+++ b/common/recipes-phosphor/mboxd/mboxd/mboxd-reload@.service
@@ -9,7 +9,7 @@
 RemainAfterExit=yes
 ExecStart=/usr/bin/killall -HUP mboxd
 # TODO: openbmc/openbmc#1045 - mboxd reload workaround
-ExecStart=/bin/sleep 10
+ExecStart=/bin/sleep 45
 
 [Install]
 WantedBy=obmc-power-chassis-off@%i.target