locking: Convert __raw_spin* functions to arch_spin*

Name space cleanup. No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: linux-arch@vger.kernel.org

arch/powerpc/lib/locks.c

@@ -82,7 +82,7 @@ void __rw_yield(raw_rwlock_t *rw)
 }
 #endif
 
-void __raw_spin_unlock_wait(arch_spinlock_t *lock)
+void arch_spin_unlock_wait(arch_spinlock_t *lock)
 {
 	while (lock->slock) {
 		HMT_low();
@@ -92,4 +92,4 @@ void __raw_spin_unlock_wait(arch_spinlock_t *lock)
 	HMT_medium();
 }
 
-EXPORT_SYMBOL(__raw_spin_unlock_wait);
+EXPORT_SYMBOL(arch_spin_unlock_wait);