phosphor-gpio-monitor.bb: bump version

Change-Id: I3a6cad7c1c4bbc58e315dbbc520c8557df32bd10
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/common/recipes-phosphor/gpio/phosphor-gpio-monitor.bb b/common/recipes-phosphor/gpio/phosphor-gpio-monitor.bb
index 29c86ba..fed6cc6 100644
--- a/common/recipes-phosphor/gpio/phosphor-gpio-monitor.bb
+++ b/common/recipes-phosphor/gpio/phosphor-gpio-monitor.bb
@@ -51,5 +51,5 @@
 FILES_${PN}-presence += "${sbindir}/phosphor-gpio-presence"
 
 SRC_URI += "git://github.com/openbmc/phosphor-gpio-monitor"
-SRCREV = "e0573e2e389a3ba1f974ae2ab0c71526634256c8"
+SRCREV = "bc4a4ff6e4d0688727d54e73356be617acf18035"
 S = "${WORKDIR}/git"