Add kernel MCTP (AF_MCTP) support and transport-implementation option

-Added support for kernel MCTP (AF_MCTP) to enable MCTP communication
 using AF_MCTP sockets.
- Introduced a new configuration option 'transport-implementation'

The 'transport-implementation' option can be set to either:
- 'mctp-demux': Uses the existing mctp-demux transport method.
- 'af-mctp': Uses the new kernel AF_MCTP transport method.

Change-Id: Ib2f7b97d0a96ceaa0cb0fc8cd7313e84c03bbd61
Signed-off-by: Pavithra Barithaya <pavithrabarithaya07@gmail.com>
diff --git a/meson.options b/meson.options
index 968d31a..4c08be3 100644
--- a/meson.options
+++ b/meson.options
@@ -19,3 +19,9 @@
     value: '/org/openpower/dump',
     description: 'Object path requesting OpenPOWER dumps',
 )
+option(
+    'transport-implementation',
+    type: 'combo',
+    choices: ['mctp-demux', 'af-mctp'],
+    description: 'transport via af-mctp or mctp-demux',
+)