GPIO: PCA953X: Increase size of invert variable to support 24 bit

TCA6424 is a low voltage 24 bit I2C and SMBus I/O expander of pca953x family
similar to its 16 bit predecessor TCA6416. It comes with three 8-bit active
Input, Output, Polarity Inversion and Configuration registers each. The polarity
of Input ports can be reversed by setting the appropiate bit in Polarity
Inversion registers.

The variables corresponding to Input, Output and Configuration registers have
already been updated to support 24 bit values. This patch thus updates the
invert variable of PCA953X platform data to support 24 bit.

Signed-off-by: Chandrabhanu Mahapatra <cmahapatra@ti.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-pca953x.c

diff --git a/drivers/gpio/gpio-pca953x.c b/drivers/gpio/gpio-pca953x.c
index de24af2..266b910 100644
--- a/drivers/gpio/gpio-pca953x.c
+++ b/drivers/gpio/gpio-pca953x.c
@@ -568,7 +568,7 @@
  * WARNING: This is DEPRECATED and will be removed eventually!
  */
 static void
-pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
+pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, u32 *invert)
 {
 	struct device_node *node;
 	const __be32 *val;
@@ -596,13 +596,13 @@
 }
 #else
 static void
-pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, int *invert)
+pca953x_get_alt_pdata(struct i2c_client *client, int *gpio_base, u32 *invert)
 {
 	*gpio_base = -1;
 }
 #endif
 
-static int __devinit device_pca953x_init(struct pca953x_chip *chip, int invert)
+static int __devinit device_pca953x_init(struct pca953x_chip *chip, u32 invert)
 {
 	int ret;
 
@@ -621,7 +621,7 @@
 	return ret;
 }
 
-static int __devinit device_pca957x_init(struct pca953x_chip *chip, int invert)
+static int __devinit device_pca957x_init(struct pca953x_chip *chip, u32 invert)
 {
 	int ret;
 	u32 val = 0;
@@ -657,8 +657,9 @@
 {
 	struct pca953x_platform_data *pdata;
 	struct pca953x_chip *chip;
-	int irq_base=0, invert=0;
+	int irq_base = 0;
 	int ret;
+	u32 invert = 0;
 
 	chip = kzalloc(sizeof(struct pca953x_chip), GFP_KERNEL);
 	if (chip == NULL)