[RFC 2/3] gpio-tps68470: Allow building as module

[Sakari Ailus <sakari.ailus@linux.intel.com>]

Allow building gpio-tps68470 driver as a module. The intel_skl_int3472 is
a module anyway, so making this a builtin does not really help setting up
this one before a dependent module probes.

Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/gpio/Kconfig         | 2 +-
 drivers/gpio/gpio-tps68470.c | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/Kconfig b/drivers/gpio/Kconfig
index fab571016adf..8911c2df97d1 100644
--- a/drivers/gpio/Kconfig
+++ b/drivers/gpio/Kconfig
@@ -1378,7 +1378,7 @@ config GPIO_TPS65912
 	  This driver supports TPS65912 gpio chip
 
 config GPIO_TPS68470
-	bool "TPS68470 GPIO"
+	tristate "TPS68470 GPIO"
 	depends on INTEL_SKL_INT3472
 	help
 	  Select this option to enable GPIO driver for the TPS68470
diff --git a/drivers/gpio/gpio-tps68470.c b/drivers/gpio/gpio-tps68470.c
index 423b7bc30ae8..0ab88ef241de 100644
--- a/drivers/gpio/gpio-tps68470.c
+++ b/drivers/gpio/gpio-tps68470.c
@@ -155,4 +155,6 @@ static struct platform_driver tps68470_gpio_driver = {
 	.probe = tps68470_gpio_probe,
 };
 
-builtin_platform_driver(tps68470_gpio_driver)
+module_platform_driver(tps68470_gpio_driver);
+
+MODULE_LICENSE("GPL");
-- 
2.30.2