MCTP: Define interface for MCTP endpoint enumeration

This interface will be implemented by an MCTP control message protocol
process[1] that discovers MCTP communication terminuses that are
discoverable by BMC. D-Bus discovery of this interface triggers higher
level protocols like PLDM to complete the PLDM discovery for the MCTP
devices.

[1] https://github.com/openbmc/docs/blob/master/designs/mctp/mctp-kernel.md

Signed-off-by: Tom Joseph <rushtotom@gmail.com>
Change-Id: I240bd3e7d300dfbc0a74ed71eb5a466e1d4a1db4
diff --git a/gen/xyz/openbmc_project/meson.build b/gen/xyz/openbmc_project/meson.build
index 6737c83..19d6746 100644
--- a/gen/xyz/openbmc_project/meson.build
+++ b/gen/xyz/openbmc_project/meson.build
@@ -66,6 +66,7 @@
 subdir('Ipmi')
 subdir('Led')
 subdir('Logging')
+subdir('MCTP')
 subdir('Memory')
 subdir('Network')
 subdir('Nvme')