regmap: Move spinlock_flags into the union

This patch move struct regmap.spinlock_flags into the union of
spinlock, so that we can shrink struct regmap size.
Signed-off-by: Yalin Wang <yalin.wang@sonymobile.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/base/regmap/internal.h

@@ -51,9 +51,11 @@ struct regmap_async {
 struct regmap {
 	union {
 		struct mutex mutex;
+		struct {
 			spinlock_t spinlock;
-	};
 			unsigned long spinlock_flags;
+		};
+	};
 	regmap_lock lock;
 	regmap_unlock unlock;
 	void *lock_arg; /* This is passed to lock/unlock functions */