Fix uild warning below introduced by
commit: cb20ff23c83b80b4115c8a44ea436cb6b40429f1

drivers/gpio/pca953x_gpio.c: In function ‘pca953x_probe’:
drivers/gpio/pca953x_gpio.c:325:48: warning: passing argument 3 of
‘pca953x_write_regs’ from incompatible pointer type [-Wincompatible-pointer-types]
  ret = pca953x_write_regs(dev, PCA953X_INVERT, &val);
                                                ^
drivers/gpio/pca953x_gpio.c:135:12: note: expected ‘u8 * {aka unsigned char *}’
but argument is of type ‘u8 (*)[5] {aka unsigned char (*)[5]}’
 static int pca953x_write_regs(struct udevice *dev, int reg, u8 *val)

Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>