phosphor-fan.inc: bump version

Change-Id: I94a08b33a43294de4631653b8ff1c700d787e9ff
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/common/recipes-phosphor/fans/phosphor-fan.inc b/common/recipes-phosphor/fans/phosphor-fan.inc
index a6a3f68..622b3fb 100644
--- a/common/recipes-phosphor/fans/phosphor-fan.inc
+++ b/common/recipes-phosphor/fans/phosphor-fan.inc
@@ -2,4 +2,4 @@
 LICENSE = "Apache-2.0"
 LIC_FILES_CHKSUM = "file://${S}/LICENSE;md5=e3fc50a88d0a364313df4b21ef20c29e"
 SRC_URI += "git://github.com/openbmc/phosphor-fan-presence"
-SRCREV = "8e9a8e75ab05e6ab69634ea365231dc6cee56087"
+SRCREV = "8e942504b07a546de78f21dcf2368507dfcf64bb"