wspoon: Enable fan control to run at BMC standby

To allow thermal modes to be selected at BMC standby, the fan control
application must be running. The phosphor-fan-control@.service file is
needed to start fan control at BMC standby and the
phosphor-fan-control-init@.service is no longer required.

Tested:
    Witherspoon phosphor-fan-control@.service replaced in image
    phosphor-fan-control-init@.service removed from image
    fan watchdog configs appended to fan control service still
    phosphor-fan-control@.service started at BMC standby
    fan control thermal modes presented/changeable at BMC standby
    no function change in configured thermal modes

Change-Id: I463cce182a838e634a789bcdfada7ddc05e341a1
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/meta-witherspoon/recipes-phosphor/fans/phosphor-fan/witherspoon/phosphor-fan-control@.service b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan/witherspoon/phosphor-fan-control@.service
new file mode 100644
index 0000000..489292b
--- /dev/null
+++ b/meta-witherspoon/recipes-phosphor/fans/phosphor-fan/witherspoon/phosphor-fan-control@.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=Phosphor Fan Control Daemon
+Requires=max31785-hwmon-helper@ahb-apb-bus\x401e78a000-i2c\x2dbus\x40100-max31785\x4052.service
+After=max31785-hwmon-helper@ahb-apb-bus\x401e78a000-i2c\x2dbus\x40100-max31785\x4052.service
+
+[Service]
+Restart=on-failure
+ExecStart=/usr/bin/phosphor-fan-control --control
+
+[Install]
+RequiredBy=obmc-chassis-poweron@%i.target