phosphor-fan-presence: srcrev bump f7fa3d339a..c21d0b36c7

Patrick Williams (2):
      sdbusplus: remove deprecated variant_ns
      sdbusplus: replace message::variant with std::variant

Change-Id: Iaf9d798f0057fcd5ed908974f121ffeee059b293
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 8297ff6..2532a15 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 = "f7fa3d339aca1857288ca1283c5bd9cae4e73b38"
+SRCREV = "c21d0b36c7f68a0ce8dbe173564aa257c333280f"