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

drivers/gpio/gpio-mvebu.c

···
 		msk = BIT(i);
 		is_out = !(io_conf & msk);
 
-		seq_printf(s, " gpio-%-3d (%-20.20s)", chip->base + i, label);
+		seq_printf(s, " gpio-%-3d (%-20.20s)", i, label);
 
 		if (is_out) {
 			seq_printf(s, " out %s %s\n",