swift: Move fan presence config

Fan presence config files reside under the machine name directory within
`phosphor-fan-presence-config`.

Tested:
    Verified config.yaml picked up for witherspoon machine
    Verified config.yaml picked up for swift machine

(From meta-ibm rev: 86142b4ce89084bf3310e3c9cbebc32a9c17afd2)

Change-Id: I5b379d593394218c9149cf1648f3288b37f6f96a
Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-ibm/meta-witherspoon/recipes-phosphor/fans/swift-phosphor-fan-presence-config/config.yaml b/meta-ibm/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-presence-config/swift/config.yaml
similarity index 100%
rename from meta-ibm/meta-witherspoon/recipes-phosphor/fans/swift-phosphor-fan-presence-config/config.yaml
rename to meta-ibm/meta-witherspoon/recipes-phosphor/fans/phosphor-fan-presence-config/swift/config.yaml