swift: Add max31785 device to hwmon for bring-up

To support fan control for swift system bring-up, the max31785 device
needs to be configured for hwmon to expose on dbus.

Tested:
    All max31785 configs and service files exist in the image

Change-Id: I002cec77bf18ca72f90d01d926c2d2a8d4b438a8
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
diff --git a/meta-witherspoon/recipes-phosphor/sensors/swift-phosphor-hwmon/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@100/max31785@52_air.conf b/meta-witherspoon/recipes-phosphor/sensors/swift-phosphor-hwmon/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@100/max31785@52_air.conf
new file mode 100644
index 0000000..cddafc1
--- /dev/null
+++ b/meta-witherspoon/recipes-phosphor/sensors/swift-phosphor-hwmon/obmc/hwmon/ahb/apb/bus@1e78a000/i2c-bus@100/max31785@52_air.conf
@@ -0,0 +1,17 @@
+LABEL_fan1 = "fan0_0"
+CRITLO_fan1 = "3000"
+CRITHI_fan1 = "12000"
+
+LABEL_fan2 = "fan1_0"
+CRITLO_fan2 = "3000"
+CRITHI_fan2 = "12000"
+
+LABEL_fan3 = "fan2_0"
+CRITLO_fan3 = "3000"
+CRITHI_fan3 = "12000"
+
+LABEL_fan4 = "fan3_0"
+CRITLO_fan4 = "3000"
+CRITHI_fan4 = "12000"
+
+TARGET_MODE = "RPM"