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>
diff --git a/drivers/gpio/gpio-adnp.c b/drivers/gpio/gpio-adnp.c
index b204033..030a389 100644
--- a/drivers/gpio/gpio-adnp.c
+++ b/drivers/gpio/gpio-adnp.c
@@ -260,7 +260,7 @@
 	chip->direction_output = adnp_gpio_direction_output;
 	chip->get = adnp_gpio_get;
 	chip->set = adnp_gpio_set;
-	chip->can_sleep = 1;
+	chip->can_sleep = true;
 
 	if (IS_ENABLED(CONFIG_DEBUG_FS))
 		chip->dbg_show = adnp_gpio_dbg_show;