phosphor-fan-presence: srcrev bump 2c8e19883d..4978e06c45

William A. Kennington III (1):
      std::variant: Apply missing fixup

Change-Id: Ia247ce0069fcbeedf41b931ba6be00665ab75e91
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 7ae7b73..996a508 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 = "2c8e19883d64efb3987e55970d793bc42ffc9da8"
+SRCREV = "4978e06c45cfe70f5ccfc6cdce92a35ae5546198"