gpio: pca953x: remove incorrect le16_to_cpu calls

i2c_smbus commands handle the correct byte order for smbus transactions
internally. This will currently result in incorrect operation on big
endian systems.
Suggested-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-pca953x.c

@@ -187,10 +187,9 @@ static int pca953x_write_regs_8(struct pca953x_chip *chip, int reg, u8 *val)
 
 static int pca953x_write_regs_16(struct pca953x_chip *chip, int reg, u8 *val)
 {
-	__le16 word = cpu_to_le16(get_unaligned((u16 *)val));
+	u16 word = get_unaligned((u16 *)val);
 
-	return i2c_smbus_write_word_data(chip->client,
-					 reg << 1, (__force u16)word);
+	return i2c_smbus_write_word_data(chip->client, reg << 1, word);
 }
 
 static int pca957x_write_regs_16(struct pca953x_chip *chip, int reg, u8 *val)
@@ -241,8 +240,7 @@ static int pca953x_read_regs_16(struct pca953x_chip *chip, int reg, u8 *val)
 	int ret;
 
 	ret = i2c_smbus_read_word_data(chip->client, reg << 1);
-	val[0] = (u16)ret & 0xFF;
-	val[1] = (u16)ret >> 8;
+	put_unaligned(ret, (u16 *)val);
 
 	return ret;
 }