[SPARC64]: Use more mearningful names for IRQ registry.

All of the interrupts say "LDX RX" and "LDX TX" currently
which is next to useless.  Put a device specific prefix
before "RX" and "TX" instead which makes it much more
useful.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/ds.c b/arch/sparc64/kernel/ds.c
index 22517df..c7ece8c 100644
--- a/arch/sparc64/kernel/ds.c
+++ b/arch/sparc64/kernel/ds.c
@@ -598,7 +598,7 @@
 	}
 	dp->lp = lp;
 
-	err = ldc_bind(lp);
+	err = ldc_bind(lp, "DS");
 	if (err)
 		goto out_free_ldc;