locking: Convert raw_spinlock to arch_spinlock

The raw_spin* namespace was taken by lockdep for the architecture
specific implementations. raw_spin_* would be the ideal name space for
the spinlocks which are not converted to sleeping locks in preempt-rt.

Linus suggested to convert the raw_ to arch_ locks and cleanup the
name space instead of using an artifical name like core_spin,
atomic_spin or whatever

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

include/linux/spinlock.h

@@ -8,7 +8,7 @@
  *
  * on SMP builds:
  *
- *  asm/spinlock_types.h: contains the raw_spinlock_t/raw_rwlock_t and the
+ *  asm/spinlock_types.h: contains the arch_spinlock_t/raw_rwlock_t and the
  *                        initializers
  *
  *  linux/spinlock_types.h:
@@ -75,7 +75,7 @@
 #define __lockfunc __attribute__((section(".spinlock.text")))
 
 /*
- * Pull the raw_spinlock_t and raw_rwlock_t definitions:
+ * Pull the arch_spinlock_t and raw_rwlock_t definitions:
  */
 #include <linux/spinlock_types.h>