include/asm-generic/atomic.h: use 'unsigned int' instead of 'unsigned long' for atomic_clear_mask()

For atomic_clear_mask(), 'v->counter' is 'int', so it is better to use 'unsigned int' instead of 'unsigned long' for parameter 'mask' to make atomic_clear_mask() itself consistency.

And atomic_[set/clear]_mask() are pairs, the modification can also let them consistent with each other.

Although the original implementation can not cause bugs, it is still better to let it improved.

---
 include/asm-generic/atomic.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

index 33bd2de..f31bff97 100644
@@ -153,7 +153,7 @@ static inline int __atomic_add_unless(atomic_t *v, int a, int u)
  * Atomically clears the bits set in @mask from @v
  */
 #ifndef atomic_clear_mask
-static inline void atomic_clear_mask(unsigned long mask, atomic_t *v)
+static inline void atomic_clear_mask(unsigned int mask, atomic_t *v)
 {
 	unsigned long flags;
 

1.7.7.6