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-max730x.c b/drivers/gpio/gpio-max730x.c
index f4f4ed1..89226a3 100644
--- a/drivers/gpio/gpio-max730x.c
+++ b/drivers/gpio/gpio-max730x.c
@@ -188,7 +188,7 @@
 	ts->chip.set = max7301_set;
 
 	ts->chip.ngpio = PIN_NUMBER;
-	ts->chip.can_sleep = 1;
+	ts->chip.can_sleep = true;
 	ts->chip.dev = dev;
 	ts->chip.owner = THIS_MODULE;