ibm: Add compatible strings for chassis

Add enums for the compatible strings used by entity-manager for the
various chassis types.

Change-Id: Ibea95513a38359b7c378add391afbb77235a4900
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/gen/com/ibm/meson.build b/gen/com/ibm/meson.build
index 85e2979..f6f99d2 100644
--- a/gen/com/ibm/meson.build
+++ b/gen/com/ibm/meson.build
@@ -1,5 +1,6 @@
 # Generated file; do not modify.
 subdir('Dump')
+subdir('Hardware')
 subdir('Logging')
 subdir('VPD')
 generated_others += custom_target(