common/ofi: Fix open-mpi/ompi#2519

As discussed in open-mpi/ompi#2519 the common component does not depend
on libfabric yet. This commit introduces this dependency by just calling
fi_version().

Signed-off-by: guserav <erik.zeiske@hpe.com>

opal/mca/common/ofi/common_ofi.c

@@ -19,5 +19,9 @@
 
 int mca_common_ofi_register_mca_variables(void)
 {
+    if (fi_version() >= FI_VERSION(1,0)) {
         return OPAL_SUCCESS;
+    } else {
+        return OPAL_ERROR;
+    }
 }

opal/mca/common/ofi/common_ofi.h

@@ -12,6 +12,7 @@
 
 #ifndef OPAL_MCA_COMMON_OFI_H
 #define OPAL_MCA_COMMON_OFI_H
+#include <rdma/fabric.h>
 
 OPAL_DECLSPEC int mca_common_ofi_register_mca_variables(void);