hwmon: cleanup non-bool "valid" data fields

We have bool so use it consistently in all the drivers.

The following Coccinelle script was used:

@@
identifier T;
type t = { char, int };
@@
struct T {
...
-	t valid;
+	bool valid;
...
}

@@
identifier v;
@@
(
- v->valid = 0
+ v->valid = false
|
- v->valid = 1
+ v->valid = true
)

followed by sed to fixup the comments:
sed '/bool valid;/{s/!=0/true/;s/zero/false/}'

Few whitespace changes were fixed manually. All modified drivers were
compile-tested.

Signed-off-by: Paul Fertser <fercerpav@gmail.com>
Link: https://lore.kernel.org/r/20210924195202.27917-1-fercerpav@gmail.com
[groeck: Fixed up 'u8 valid' to 'boool valid' in atxp1.c]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/f75375s.c b/drivers/hwmon/f75375s.c
index 3e567be..57c8a47 100644
--- a/drivers/hwmon/f75375s.c
+++ b/drivers/hwmon/f75375s.c
@@ -85,7 +85,7 @@ struct f75375_data {
 	const char *name;
 	int kind;
 	struct mutex update_lock; /* protect register access */
-	char valid;
+	bool valid;
 	unsigned long last_updated;	/* In jiffies */
 	unsigned long last_limits;	/* In jiffies */
 
@@ -228,7 +228,7 @@ static struct f75375_data *f75375_update_device(struct device *dev)
 				f75375_read8(client, F75375_REG_VOLT(nr));
 
 		data->last_updated = jiffies;
-		data->valid = 1;
+		data->valid = true;
 	}
 
 	mutex_unlock(&data->update_lock);