[SPARC32]: Build fix.

Fix 6197fe4d

arch/sparc/lib/atomic32.c: In function '__cmpxchg_u32':
arch/sparc/lib/atomic32.c:127: error: 'addr' undeclared (first use in this function)
arch/sparc/lib/atomic32.c:127: error: (Each undeclared identifier is reported only once
arch/sparc/lib/atomic32.c:127: error: for each function it appears in.)

I assume this is what was intended..
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Acked-by: NWilliam Irwin <wli@holomorphy.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/sparc/lib/atomic32.c

@@ -124,10 +124,10 @@ unsigned long __cmpxchg_u32(volatile u32 *ptr, u32 old, u32 new)
 	unsigned long flags;
 	u32 prev;
 
-	spin_lock_irqsave(ATOMIC_HASH(addr), flags);
+	spin_lock_irqsave(ATOMIC_HASH(ptr), flags);
 	if ((prev = *ptr) == old)
 		*ptr = new;
-	spin_unlock_irqrestore(ATOMIC_HASH(addr), flags);
+	spin_unlock_irqrestore(ATOMIC_HASH(ptr), flags);
 
 	return (unsigned long)prev;
 }