btl/ugni: fix bug when attempting unaligned get on aries

This commit fixes a programming error when using an aries nic. The
documentation of ugni shows that only the local alignment restriction
for get was lifted on aries. There is still a remote address alignment
restriction.

Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>

opal/mca/btl/ugni/btl_ugni_component.c

@@ -275,11 +275,8 @@ btl_ugni_component_register(void)
     /*
      * see def. of ALIGNMENT_MASK to figure this one out
      */
-    if (GNI_DEVICE_GEMINI == device_type) {
+    /* both gemini and aries have a 4-byte alignment requirement on remote addresses */
     mca_btl_ugni_module.super.btl_get_alignment = 4;
-    } else {
-        mca_btl_ugni_module.super.btl_get_alignment = 0;
-    }
 
     /* threshold for put */
     mca_btl_ugni_module.super.btl_min_rdma_pipeline_size    = 8 * 1024;