regulator: fan53555: fix wrong cast in probe

The vendor-id gathered from the dt match-data was cast to int but assigned
to an unsigned long, producing warnings on at least sparc, like

   drivers/regulator/fan53555.c: In function 'fan53555_regulator_probe':
>> drivers/regulator/fan53555.c:373:16: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
      di->vendor = (int) match->data;

Fix this by using an appropriate cast.

Reported-by: kbuild test robot
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

drivers/regulator/fan53555.c

@@ -370,7 +370,7 @@ static int fan53555_regulator_probe(struct i2c_client *client,
 		if (!match)
 			return -ENODEV;
 
-		di->vendor = (int) match->data;
+		di->vendor = (unsigned long) match->data;
 	} else {
 		/* if no ramp constraint set, get the pdata ramp_delay */
 		if (!di->regulator->constraints.ramp_delay) {