gpio: 74xx-mmio: Use bits instead of plain numbers for flags

The initial code was misleading to use bitwise AND against plain number,
and the commit d3054ba1db62 ("gpio: 74xx-mmio: Check MMIO_74XX_DIR_IN flag
in mmio_74xx_dir_in()") missed that. Switch definitions to be defined bits
for the correct comparison.

Fixes: d3054ba1db62 ("gpio: 74xx-mmio: Check MMIO_74XX_DIR_IN flag in mmio_74xx_dir_in()")
Reported-by: Dan Carpenter <[e-mail]>
Signed-off-by: Andy Shevchenko <[e-mail]>
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-74xx-mmio.c

···
 #include <linux/platform_device.h>
 #include <linux/property.h>
 
-#define MMIO_74XX_DIR_IN	(0 << 8)
-#define MMIO_74XX_DIR_OUT	(1 << 8)
+#define MMIO_74XX_DIR_IN	BIT(8)
+#define MMIO_74XX_DIR_OUT	BIT(9)
 #define MMIO_74XX_BIT_CNT(x)	((x) & GENMASK(7, 0))
 
 struct mmio_74xx_gpio_priv {