gpio/pinctrl: make gpio_chip members typed boolean

This switches the two members of struct gpio_chip that were
defined as unsigned foo:1 to bool, because that is indeed what
they are. Switch all users in the gpio and pinctrl subsystems
to assign these values with true/false instead of 0/1. The
users outside these subsystems will survive since true/false
is 1/0, atleast we set some kind of more strict typing example.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

drivers/gpio/gpio-ks8695.c

@@ -228,7 +228,7 @@ static struct gpio_chip ks8695_gpio_chip = {
 	.to_irq			= ks8695_gpio_to_irq,
 	.base			= 0,
 	.ngpio			= 16,
-	.can_sleep		= 0,
+	.can_sleep		= false,
 };
 
 /* Register the GPIOs */