gpio: ucb1400: Can be built as a module

With the recent code cleanup from Marek Vasut, driver gpio-ucb1400 can
be built as a module, so change symbol GPIO_UCB1400 from bool to
tristate.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Marek Vasut <marex@denx.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index 8e1d4db..7de768e 100644 (file)
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -703,7 +703,7 @@ config GPIO_74X164
 comment "AC97 GPIO expanders:"
 
 config GPIO_UCB1400
-       bool "Philips UCB1400 GPIO"
+       tristate "Philips UCB1400 GPIO"
        depends on UCB1400_CORE
        help
          This enables support for the Philips UCB1400 GPIO pins.