[SPARC64]: Kill sole argument passed to setup_tba().

No longer used, and move extern declaration to a header file.

Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc64/mm/init.c b/arch/sparc64/mm/init.c
index f4d22cc..20e7af5 100644
--- a/arch/sparc64/mm/init.c
+++ b/arch/sparc64/mm/init.c
@@ -1092,15 +1092,8 @@
 	
 	inherit_prom_mappings();
 	
-	/* Ok, we can use our TLB miss and window trap handlers safely.
-	 * We need to do a quick peek here to see if we are on StarFire
-	 * or not, so setup_tba can setup the IRQ globals correctly (it
-	 * needs to get the hard smp processor id correctly).
-	 */
-	{
-		extern void setup_tba(int);
-		setup_tba(this_is_starfire);
-	}
+	/* Ok, we can use our TLB miss and window trap handlers safely.  */
+	setup_tba();
 
 	__flush_tlb_all();