Add Witherspoon fan policy

Add Witherspoon fan plug policy rules for the Witherspoon system.

An air cooled Witherspoon requires a minimum of three functional fans.
If the number of functional fans drops below that for longer than five
seconds power the system off.

A water cooled Witherspoon requires a minimum of two functional fans.
If the number of functional fans drops below that for longer than five
seconds power the system off.

Change-Id: I0bba905dcd7542c43215a051e2df2c87fefce154
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-witherspoon/recipes-phosphor/dbus/phosphor-dbus-monitor-config-native%.bbappend b/meta-witherspoon/recipes-phosphor/dbus/phosphor-dbus-monitor-config-native%.bbappend
index e69de29..6bf76ab 100644
--- a/meta-witherspoon/recipes-phosphor/dbus/phosphor-dbus-monitor-config-native%.bbappend
+++ b/meta-witherspoon/recipes-phosphor/dbus/phosphor-dbus-monitor-config-native%.bbappend
@@ -0,0 +1 @@
+PHOSPHOR_DBUS_MONITOR_CONFIGS_append = " witherspoon-fan-policy-native"