configurations: Add Bonnell and Pennybacker

Add IBM's Bonnell chassis and its backplane Pennybacker.
The IM value for Bonnell is 50004000 as defined by the vpd repo:
```
https://github.com/openbmc/openpower-vpd-parser/blob/master/const.hpp
```
The CC value for Pennybacker is 2E44.
The sensor values for the power supplies are defined in the kernel
device tree:
```
https://github.com/openbmc/linux/blob/dev-6.0/arch/arm/boot/dts/aspeed-bmc-ibm-bonnell.dts
```

Tested: Verified that the new json files were added to the rootfs image
and that CI passed.

Change-Id: I32c8de73eb4c934da864672677a2a6dae653d241
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/configurations/pennybacker.json b/configurations/pennybacker.json
new file mode 100644
index 0000000..0ba57ed
--- /dev/null
+++ b/configurations/pennybacker.json
@@ -0,0 +1,29 @@
+{
+    "Exposes": [
+        {
+            "I2CAddress": 88,
+            "I2CBus": 3,
+            "Name": "Power Supply Slot 0",
+            "NamedPresenceGpio": "presence-ps0",
+            "Type": "IBMCFFPSConnector"
+        },
+        {
+            "I2CAddress": 89,
+            "I2CBus": 3,
+            "Name": "Power Supply Slot 1",
+            "NamedPresenceGpio": "presence-ps1",
+            "Type": "IBMCFFPSConnector"
+        },
+        {
+            "Address": "0x64",
+            "Bus": 2,
+            "Name": "UCD90160 Power Sequencer",
+            "Type": "UCD90160"
+        }
+    ],
+    "Name": "Pennybacker Backplane",
+    "Probe": [
+        "com.ibm.ipzvpd.VINI({'CC': [50, 69, 52, 52]})"
+    ],
+    "Type": "Board"
+}