Swift: Fix syntax error in gpio_defs.json

Add a missing comma.

(From meta-ibm rev: 3ea8d6e97d452bd77b51e081e880b8e211211efc)

Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Change-Id: I9b9f25767b47a4f48a2653c7ba7a88cf1d4bb779
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-ibm/meta-witherspoon/recipes-phosphor/skeleton/obmc-libobmc-intf/swift/gpio_defs.json b/meta-ibm/meta-witherspoon/recipes-phosphor/skeleton/obmc-libobmc-intf/swift/gpio_defs.json
index 83332db..83143b0 100644
--- a/meta-ibm/meta-witherspoon/recipes-phosphor/skeleton/obmc-libobmc-intf/swift/gpio_defs.json
+++ b/meta-ibm/meta-witherspoon/recipes-phosphor/skeleton/obmc-libobmc-intf/swift/gpio_defs.json
@@ -53,7 +53,7 @@
             "name": "POWER_BUTTON",
             "pin": "I3",
             "direction": "both"
-        }
+        },
         {
             "name": "AIR_WATER_N",
             "pin": "B5",