mfd: Fix tps65910 build failure

The tps65910_parse_dt() prototype for !CONFIG_OF was not correct, leading to:

drivers/mfd/tps65910.c: In function ‘tps65910_i2c_probe’:
drivers/mfd/tps65910.c:218:3: error: too many arguments to function ‘tps65910_parse_dt’
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/mfd/tps65910.c

@@ -196,8 +196,9 @@ static struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
 	return board_info;
 }
 #else
-static inline struct tps65910_board *tps65910_parse_dt(
-					struct i2c_client *client)
+static inline
+struct tps65910_board *tps65910_parse_dt(struct i2c_client *client,
+					 int *chip_id)
 {
 	return NULL;
 }