phosphor-fan.inc: bump version

Change-Id: Ieed5d68fb8bc35a4a863855009fc8ee35b2a6925
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
diff --git a/common/recipes-phosphor/fans/phosphor-fan.inc b/common/recipes-phosphor/fans/phosphor-fan.inc
index d53b8e0..afdfc16 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 = "e65f617c6a79eb92c122310f35ddb8a496e729fd"
+SRCREV = "e4338cdb856db2b71f8adf42c50603d816980f8a"