gpio: wm8994: don't print out global GPIO numbers in debugfs callbacks

In order to further limit the number of references to the GPIO base
number stored in struct gpio_chip, replace the global GPIO numbers in
the output of debugfs callbacks by hardware offsets.

Reviewed-by: Charles Keepax <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Bartosz Golaszewski <[e-mail]>

drivers/gpio/gpio-wm8994.c

···
 	int i;
 
 	for (i = 0; i < chip->ngpio; i++) {
-		int gpio = i + chip->base;
 		int reg;
 
 		/* We report the GPIO even if it's not requested since
···
 			continue;
 		}
 
-		seq_printf(s, " gpio-%-3d (%-20.20s) ", gpio,
+		seq_printf(s, " gpio-%-3d (%-20.20s) ", i,
 			   label ?: "Unrequested");
 
 		reg = wm8994_reg_read(wm8994, WM8994_GPIO_1 + i);
 		if (reg < 0) {
 			dev_err(wm8994->dev,
-				"GPIO control %d read failed: %d\n",
-				gpio, reg);
+				"GPIO control %d read failed: %d\n", i, reg);
 			seq_printf(s, "\n");
 			continue;
 		}