Fix mutex_trylock() copy-and-paste bug (x86, x86-64, generic mutex-dec.h)

Noticed by Arjan originally on x86-64, then Ingo on x86, and finally me
grepping for it in the generic version.

Bad parenthesis nesting.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

include/asm-generic/mutex-dec.h

@@ -97,7 +97,7 @@ __mutex_fastpath_trylock(atomic_t *count, int (*fail_fn)(atomic_t *))
 	 * the mutex state would be.
 	 */
 #ifdef __HAVE_ARCH_CMPXCHG
-	if (likely(atomic_cmpxchg(count, 1, 0)) == 1) {
+	if (likely(atomic_cmpxchg(count, 1, 0) == 1)) {
 		smp_mb();
 		return 1;
 	}

include/asm-i386/mutex.h

@@ -125,7 +125,7 @@ __mutex_fastpath_trylock(atomic_t *count, int (*fail_fn)(atomic_t *))
 	 * the mutex state would be.
 	 */
 #ifdef __HAVE_ARCH_CMPXCHG
-	if (likely(atomic_cmpxchg(count, 1, 0)) == 1)
+	if (likely(atomic_cmpxchg(count, 1, 0) == 1))
 		return 1;
 	return 0;
 #else

include/asm-x86_64/mutex.h

@@ -104,7 +104,7 @@ do {									\
 static inline int
 __mutex_fastpath_trylock(atomic_t *count, int (*fail_fn)(atomic_t *))
 {
-	if (likely(atomic_cmpxchg(count, 1, 0)) == 1)
+	if (likely(atomic_cmpxchg(count, 1, 0) == 1))
 		return 1;
 	else
 		return 0;