[PATCH v2] gpio: vf610: Allow building as a module

[Jindong Yue]

Support for building it as a module for use on the Android
platform, because the Android kernel(GKI) doesn't contain
board-specific drivers, it requires that these drivers
be built as a module and loaded into the system.

Signed-off-by: Jindong Yue <jindong.yue@xxxxxxx>
---
v2 update: 
builtin_platform_driver -> module_platform_driver
---
 drivers/gpio/Kconfig      | 2 +-
 drivers/gpio/gpio-vf610.c | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index f2c39bbff83a..17127555f582 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -753,7 +753,7 @@ config GPIO_UNIPHIER
 	  Say yes here to support UniPhier GPIOs.
 
 config GPIO_VF610
-	bool "VF610 GPIO support"
+	tristate "VF610 GPIO support"
 	default y if SOC_VF610
 	depends on ARCH_MXC || COMPILE_TEST
 	select GPIOLIB_IRQCHIP
diff --git a/drivers/gpio/gpio-vf610.c b/drivers/gpio/gpio-vf610.c
index 4dad7ce0c4dc..7de0d5b53d56 100644
--- a/drivers/gpio/gpio-vf610.c
+++ b/drivers/gpio/gpio-vf610.c
@@ -345,4 +345,6 @@ static struct platform_driver vf610_gpio_driver = {
 	.probe		= vf610_gpio_probe,
 };
 
-builtin_platform_driver(vf610_gpio_driver);
+module_platform_driver(vf610_gpio_driver);
+MODULE_DESCRIPTION("VF610 GPIO driver");
+MODULE_LICENSE("GPL");
-- 
2.34.1