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/meson.build b/meson.build
index 05ade13..f590b79 100644
--- a/meson.build
+++ b/meson.build
@@ -93,6 +93,7 @@
     'axx2prthdhd.json',
     'bnp_baseboard.json',
     'bellavista.json',
+    'bonnell.json',
     'delta_awf2dc3200w_psu.json',
     'delta_dps-750xb_psu.json',
     'delta_dps-1600ab_psu.json',
@@ -121,6 +122,7 @@
     'nisqually.json',
     'nvme_p4000.json',
     'pcie_ssd_retimer.json',
+    'pennybacker.json',
     'pssf132202a.json',
     'pssf162205a.json',
     'pssf212201a.json',