fp5280g2: Add fan presence yaml config

Fp5280g2 uses GPIOs to detect fan presences.

Tested: Verified that the Present property in dbus corresponds
        correctly reflects wheather a fan is present or not.
	busctl get-property xyz.openbmc_project.Inventory.Manager
	/xyz/openbmc_project/inventory/system/chassis/motherboard/fan0
	xyz.openbmc_project.Inventory.Item Present

(From meta-inspur rev: 92dd17dc6efbf3eafc1a661e51ad5ae81ee8293d)

Signed-off-by: John Wang <wangzqbj@inspur.com>
Change-Id: I72960a336e003868df3fa1715bd9ca2c3383fdc1
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-inspur/meta-fp5280g2/recipes-phosphor/fans/phosphor-fan-presence-config.bbappend b/meta-inspur/meta-fp5280g2/recipes-phosphor/fans/phosphor-fan-presence-config.bbappend
new file mode 100644
index 0000000..a5847a6
--- /dev/null
+++ b/meta-inspur/meta-fp5280g2/recipes-phosphor/fans/phosphor-fan-presence-config.bbappend
@@ -0,0 +1 @@
+FILESEXTRAPATHS_prepend_fp5280g2 := "${THISDIR}/${BPN}:"