ibm-ac-server: Create fan watchdog configs

Create fan watchdog configs for all ibm-ac-server machines

Tested:
    Built witherspoon and verified appropriate config files in image
    Built swift and verified appropriate config files in image
    Built tacoma and verified appropriate config files in image

(From meta-ibm rev: ab3b7b8e234134cc4d1123817de64708712cfc1f)

Change-Id: I75790b96077575878a9115072b016ad59a2f2420
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
Signed-off-by: Andrew Geissler <geissonator@yahoo.com>