ARM: omap1: Fix up the Retu IRQ on Nokia 770

The Retu IRQ is off by one, as a result the power button does not work.
Fix it.

Fixes: 084b6f2 ("ARM: omap1: Fix up the Nokia 770 board device IRQs")
Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/Z3UxH_fOzuftjnuX@darkstar.musicnaut.iki.fi
Signed-off-by: Kevin Hilman <khilman@baylibre.com>

Author: aakoskin

arch/arm/mach-omap1/board-nokia770.c

@@ -289,7 +289,7 @@ static struct gpiod_lookup_table nokia770_irq_gpio_table = {
 		GPIO_LOOKUP("gpio-0-15", 15, "ads7846_irq",
 			    GPIO_ACTIVE_HIGH),
 		/* GPIO used for retu IRQ */
-		GPIO_LOOKUP("gpio-48-63", 15, "retu_irq",
+		GPIO_LOOKUP("gpio-48-63", 14, "retu_irq",
 			    GPIO_ACTIVE_HIGH),
 		/* GPIO used for tahvo IRQ */
 		GPIO_LOOKUP("gpio-32-47", 8, "tahvo_irq",