Initial MCTP core code

Just a skeleton of the MCTP library at present.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
diff --git a/Makefile.inc b/Makefile.inc
new file mode 100644
index 0000000..99edaac
--- /dev/null
+++ b/Makefile.inc
@@ -0,0 +1,6 @@
+LIBMCTP_DIR ?= libmctp/
+LIBMCTP_OBJS = core.o alloc.o serial.o
+
+LIBMCTP = $(LIBMCTP_DIR)libmctp.a
+
+$(LIBMCTP): $(LIBMCTP_OBJS:%=$(LIBMCTP_DIR)%)