[SPARC64]: Fix {mc,smt}_capable().

It's not just sun4v hypervisor platforms that should return true
for this, sun4u with UltraSPARC-IV should return true too.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/kernel/mdesc.c b/arch/sparc64/kernel/mdesc.c
index 1b5db4b..f0e16045 100644
--- a/arch/sparc64/kernel/mdesc.c
+++ b/arch/sparc64/kernel/mdesc.c
@@ -624,6 +624,10 @@
 		c->proc_id = -1;
 	}
 
+#ifdef CONFIG_SMP
+	sparc64_multi_core = 1;
+#endif
+
 	set_core_ids();
 	set_proc_ids();