host-transport-extensions: Replace deprecated libpldm header path

There are more OEMs than IBM contributing to libpldm, so the OEM headers
were restructured. Replace the deprecated IBM OEM header path with the
namespaced path.

The patch was generated by with the coccinelle[1] script from [2]:

```
$ spatch \
--sp-file .../libpldm/origin/evolutions/current/oem-ibm-header-compat.cocci \
--in-place \
$(git ls-files | grep -E '\.[ch](pp)?')
```

[1]: https://coccinelle.gitlabpages.inria.fr/website/
[2]: https://gerrit.openbmc.org/c/openbmc/libpldm/+/72202

Change-Id: I60f2fb09f1f680e21522f2d3f9d9fa8ecc115bfe
Signed-off-by: Andrew Jeffery <andrew@codeconstruct.com.au>
diff --git a/host-transport-extensions/pldm/oem/ibm/pldm_oem_cmds.cpp b/host-transport-extensions/pldm/oem/ibm/pldm_oem_cmds.cpp
index dbb6749..3670c2d 100644
--- a/host-transport-extensions/pldm/oem/ibm/pldm_oem_cmds.cpp
+++ b/host-transport-extensions/pldm/oem/ibm/pldm_oem_cmds.cpp
@@ -20,7 +20,7 @@
 #include "xyz/openbmc_project/Common/error.hpp"
 
 #include <libpldm/base.h>
-#include <libpldm/file_io.h>
+#include <libpldm/oem/ibm/file_io.h>
 #include <libpldm/platform.h>
 #include <unistd.h>