Add Romulus GPIO JSON

These GPIOs are used by the code in the skeleton repo.

(From meta-ibm rev: 55b2003b3e07c7d45f94409eaf636f0335571152)

Change-Id: I88f44342a587b8dccaa845bff59c35e1414d1358
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>

meta-ibm/meta-romulus/recipes-phosphor/skeleton/obmc-libobmc-intf.bbappend

@@ -0,0 +1 @@
+FILESEXTRAPATHS_prepend := "${THISDIR}/${PN}:"

meta-ibm/meta-romulus/recipes-phosphor/skeleton/obmc-libobmc-intf/gpio_defs.json

@@ -0,0 +1,72 @@
+{
+    "gpio_configs": {
+
+        "power_config": {
+            "power_good_in": "SYS_PWROK_BUFF",
+            "power_up_outs": [
+                { "name": "SOFTWARE_PGOOD", "polarity": true},
+                { "name": "BMC_POWER_UP", "polarity": true}
+            ],
+            "reset_outs": [
+            ]
+        }
+    },
+
+    "gpio_definitions": [
+        {
+            "name": "SOFTWARE_PGOOD",
+            "pin": "R1",
+            "direction": "out"
+        },
+        {
+            "name": "BMC_POWER_UP",
+            "pin": "D1",
+            "direction": "out"
+        },
+        {
+            "name": "SYS_PWROK_BUFF",
+            "pin": "D2",
+            "direction": "in"
+        },
+        {
+            "name": "BMC_WD_CLEAR_PULSE_N",
+            "pin": "N5",
+            "direction": "falling"
+        },
+        {
+            "name": "CHECKSTOP",
+            "pin": "J2",
+            "direction": "falling"
+        },
+        {
+            "name": "BMC_CP0_RESET_N",
+            "pin": "A1",
+            "direction": "out"
+        },
+        {
+            "name": "BMC_CP0_PERST_ENABLE_R",
+            "pin": "A3",
+            "direction": "out"
+        },
+        {
+            "name": "BMC_THROTTLE",
+            "pin": "J3",
+            "direction": "out"
+        },
+        {
+            "name": "IDBTN",
+            "pin": "Q7",
+            "direction": "out"
+        },
+        {
+            "name": "POWER_BUTTON",
+            "pin": "I3",
+            "direction": "both"
+        },
+        {
+            "name": "RESET_BUTTON",
+            "pin": "J1",
+            "direction": "both"
+        }
+    ]
+}