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-twl6040.c

@@ -77,7 +77,7 @@ static struct gpio_chip twl6040gpo_chip = {
 	.get			= twl6040gpo_get,
 	.direction_output	= twl6040gpo_direction_out,
 	.set			= twl6040gpo_set,
-	.can_sleep		= 1,
+	.can_sleep		= true,
 };
 
 /*----------------------------------------------------------------------*/