BTL/OPENIB: set "max_lmc" param to be "1" and not "all available values" by default.

cmr=v1.8.3:reviewer=miked 

This commit was SVN r32736.

opal/mca/btl/openib/btl_openib_mca.c

@@ -455,7 +455,7 @@ int btl_openib_register_mca_params(void)
 
     CHECK(reg_uint("max_lmc", NULL, "Maximum number of LIDs to use for each device port "
                    "(must be >= 0, where 0 = use all available)",
-                   0, &mca_btl_openib_component.max_lmc, 0));
+                   1, &mca_btl_openib_component.max_lmc, 0));
 
 #if OPAL_HAVE_THREADS
     CHECK(reg_int("enable_apm_over_lmc", NULL, "Maximum number of alternative paths for each device port "