configs: add ibm rainier 1s4u

The rainier 1s4u system will be different enough from the standard 4u
variant that a new config is required. These differences include a
different kernel device tree, different power supplies, and a
different fan configuration.

Tested:
- Verified that when IM keyword was programmed to match the 1s4u that
  correct config was loaded by entity manager
  /xyz/openbmc_project/inventory/system/chassis
     `-/xyz/openbmc_project/inventory/system/chassis/Rainier_1S4U_Chassis
     `-/xyz/openbmc_project/inventory/system/chassis/Rainier_1S4U_Chassis/Compatible_System

Signed-off-by: Andrew Geissler <geissonator@yahoo.com>
Change-Id: Ieca50c03154d268726ed9ec541939e73658d427d
diff --git a/configurations/Rainier 1S4U Chassis.json b/configurations/Rainier 1S4U Chassis.json
new file mode 100644
index 0000000..b381585
--- /dev/null
+++ b/configurations/Rainier 1S4U Chassis.json
@@ -0,0 +1,17 @@
+{
+    "Exposes": [
+        {
+            "Name": "Compatible System",
+            "Type": "IBMCompatibleSystem",
+            "Names": [
+                "ibm,rainier-1s4u",
+                "ibm,rainier"
+            ]
+        }
+    ],
+    "Name": "Rainier 1S4U Chassis",
+    "Probe": [
+        "com.ibm.ipzvpd.VSBP({'IM': [80, 0, 16, 2]})"
+    ],
+    "Type": "Chassis"
+}