mfd: tps65910: Rid data size incompatibility warn when building for 64bit

Extinguishes:

../drivers/mfd/tps65910.c: In function ‘tps65910_parse_dt’:
../drivers/mfd/tps65910.c:404:14:
	warning: cast from pointer to integer of different size

Signed-off-by: Lee Jones <lee.jones@linaro.org>
diff --git a/drivers/mfd/tps65910.c b/drivers/mfd/tps65910.c
index f9e42ea..f243e75 100644
--- a/drivers/mfd/tps65910.c
+++ b/drivers/mfd/tps65910.c
@@ -387,7 +387,7 @@
 MODULE_DEVICE_TABLE(of, tps65910_of_match);
 
 static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
-						int *chip_id)
+						unsigned long *chip_id)
 {
 	struct device_node *np = client->dev.of_node;
 	struct tps65910_board *board_info;
@@ -401,7 +401,7 @@
 		return NULL;
 	}
 
-	*chip_id  = (int)match->data;
+	*chip_id  = (unsigned long)match->data;
 
 	board_info = devm_kzalloc(&client->dev, sizeof(*board_info),
 			GFP_KERNEL);
@@ -431,7 +431,7 @@
 #else
 static inline
 struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
-					 int *chip_id)
+					 unsigned long *chip_id)
 {
 	return NULL;
 }
@@ -453,14 +453,14 @@
 }
 
 static int tps65910_i2c_probe(struct i2c_client *i2c,
-					const struct i2c_device_id *id)
+			      const struct i2c_device_id *id)
 {
 	struct tps65910 *tps65910;
 	struct tps65910_board *pmic_plat_data;
 	struct tps65910_board *of_pmic_plat_data = NULL;
 	struct tps65910_platform_data *init_data;
+	unsigned long chip_id = id->driver_data;
 	int ret = 0;
-	int chip_id = id->driver_data;
 
 	pmic_plat_data = dev_get_platdata(&i2c->dev);