phosphor-fan-presence: srcrev bump efbe7abd50..d4c001f2e3

Matthew Barth (2):
      Support int32 property variant type
      Decrease speeds when a decrease delta exists

Change-Id: If420f36f8a333a8a83bdb6b04bd05b4e6b704971
Signed-off-by: Andrew Geissler <openbmcbump-github@yahoo.com>
diff --git a/recipes-phosphor/fans/phosphor-fan.inc b/recipes-phosphor/fans/phosphor-fan.inc
index 85619ea..44e76b4 100644
--- a/recipes-phosphor/fans/phosphor-fan.inc
+++ b/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 = "efbe7abd508a3e24fc4d1f4ed0ac6c04836c3d72"
+SRCREV = "d4c001f2e37d5d11fbee9866408e20f1f227af54"