power: supply: surface-charger: Fix type of integer variable

[ Upstream commit 601423b ]

The ac->state field is __le32, not u32. So change the variable we're
temporarily storing it in to __le32 as well.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: e61ffb3 ("power: supply: Add AC driver for Surface Aggregator Module")
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

drivers/power/supply/surface_charger.c

@@ -66,7 +66,7 @@ struct spwr_ac_device {
 
 static int spwr_ac_update_unlocked(struct spwr_ac_device *ac)
 {
-	u32 old = ac->state;
+	__le32 old = ac->state;
 	int status;
 
 	lockdep_assert_held(&ac->lock);