gpio: pca953x: remove unneeded check for chip type

We can assume our own device_id table is correct, so remove checking if
the chip type is valid. (The check was bogus anyway: If it found an
invalid entry, it returned with 0!) This is in preparation for further
cleanups.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

drivers/gpio/gpio-pca953x.c

@@ -673,10 +673,8 @@ static int __devinit pca953x_probe(struct i2c_client *client,
 
 	if (chip->chip_type == PCA953X_TYPE)
 		device_pca953x_init(chip, invert);
-	else if (chip->chip_type == PCA957X_TYPE)
-		device_pca957x_init(chip, invert);
 	else
-		goto out_failed;
+		device_pca957x_init(chip, invert);
 
 	ret = pca953x_irq_setup(chip, id, irq_base);
 	if (ret)