Adjust motherboard and memory buffer fru_types.

IPMI code is hardcoded to look for MAIN_PLANAR and
MEMORY_BUFFER, so make sure it can find them.

Resolves openbmc/openbmc#604.

Change-Id: I9b1b3bfa98bfd0a72f7f29c147b45f5b699272e2
Signed-off-by: Matt Spinler <spinler@us.ibm.com>
diff --git a/inventory.pl b/inventory.pl
index 13c3df1..75c4241 100755
--- a/inventory.pl
+++ b/inventory.pl
@@ -118,7 +118,9 @@
     renameType("NODE", "SYSTEM", $items);
 
     renameSegmentWithTargetType("card-motherboard", "motherboard", $items);
-    renameTypeWithTargetType("card-motherboard", "MOTHERBOARD", $items);
+    renameTypeWithTargetType("card-motherboard", "MAIN_PLANAR", $items);
+
+    renameType("MEMBUF", "MEMORY_BUFFER", $items);
 
     renameType("FSP", "BMC", $items);