Binding for PCIe transport, starting point

Beginning of PCIe VDM binding implementation for aspeed AST2600.
Only stubs for initialization routines, api and callbacks.

This implementation depends on AST600 mctp driver (work in progress).
We don't plan to extend this implementation to other HW platforms.

Tests initialization routine with assert checks of crucial parameters.

Change-Id: I885ce82d68345bdcf06f99005c40ea2f7bdcbd4b
Signed-off-by: Przemyslaw Czarnowski <przemyslaw.hawrylewicz.czarnowski@intel.com>
diff --git a/configure.ac b/configure.ac
index 138fa05..9b61b2e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -126,6 +126,7 @@
 # Enable all bindings. AC_ARG_ENABLE in future.
 AM_CONDITIONAL([LIBMCTP_BINDING_serial], [true])
 AM_CONDITIONAL([LIBMCTP_BINDING_astlpc], [true])
+AM_CONDITIONAL([LIBMCTP_BINDING_astpcie], [true])
 
 AX_CODE_COVERAGE
 m4_ifdef([_AX_CODE_COVERAGE_RULES],