mboxbridge: srcrev bump fd4fa34d56..4c15bb1768

Andrew Jeffery (1):
      mboxd: Set BMC_EVENT_PROTOCOL_RESET on startup

Change-Id: Id2143797552f83a9a529039084cd3da2e999b6d3
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
diff --git a/recipes-phosphor/mboxd/mboxd_git.bb b/recipes-phosphor/mboxd/mboxd_git.bb
index 41d4913..0353d4c 100644
--- a/recipes-phosphor/mboxd/mboxd_git.bb
+++ b/recipes-phosphor/mboxd/mboxd_git.bb
@@ -21,7 +21,7 @@
 SRC_URI += "file://99-aspeed-lpc-ctrl.rules"
 SRC_URI += "file://aspeed-lpc-ctrl-h.patch"
 
-SRCREV="fd4fa34d5680b68d0669f5e3a799556f0d73a9c1"
+SRCREV="4c15bb1768765e06060a4cde3b22e7bc8896574f"
 
 PROVIDES += "mboxctl"