Fix assembly btc -> btcl for compilation with clang

Author:  PaX Team <pageexec at freemail.hu>
ML-Post: http://lists.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20120507/142707.html
URL:     http://llvm.linuxfoundation.org

Merge:   Jan-Simon Möller <dl9pf at gmx.de>

Description:

Author: dl9pf

arch/x86/include/asm/percpu.h

@@ -493,7 +493,7 @@ do {									\
 #define x86_test_and_clear_bit_percpu(bit, var)				\
 ({									\
 	int old__;							\
-	asm volatile("btr %2,"__percpu_arg(1)"\n\tsbbl %0,%0"		\
+	asm volatile("btrl %2,"__percpu_arg(1)"\n\tsbbl %0,%0"		\
 		     : "=r" (old__), "+m" (var)				\
 		     : "dIr" (bit));					\
 	old__;								\