[PATCH v4 29/32] pinctrl: mediatek: mt6397: Enable module build support

[Justin Yeh <justin.yeh@mediatek.com>]

Add MODULE_LICENSE("GPL v2") macro and change Kconfig option from
bool to tristate to allow building as a loadable kernel module.

This is required for Android GKI + vendor_dlkm deployments where
vendor-specific drivers must be kept separate from the GKI vmlinux.

Fixes: fc59e66c4284 ("pinctrl: mediatek: Add Pinctrl/GPIO driver for mt6397.")
Signed-off-by: Justin Yeh <justin.yeh@mediatek.com>
---
 drivers/pinctrl/mediatek/Kconfig          | 2 +-
 drivers/pinctrl/mediatek/pinctrl-mt6397.c | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/pinctrl/mediatek/Kconfig b/drivers/pinctrl/mediatek/Kconfig
index eb4bb7408f8d..a73febf867ec 100644
--- a/drivers/pinctrl/mediatek/Kconfig
+++ b/drivers/pinctrl/mediatek/Kconfig
@@ -308,7 +308,7 @@ config PINCTRL_MT8516
 
 # For PMIC
 config PINCTRL_MT6397
-	bool "MediaTek MT6397 pin control"
+	tristate "MediaTek MT6397 pin control"
 	depends on MFD_MT6397 || COMPILE_TEST
 	depends on OF
 	default MFD_MT6397
diff --git a/drivers/pinctrl/mediatek/pinctrl-mt6397.c b/drivers/pinctrl/mediatek/pinctrl-mt6397.c
index 03d0f65d7bcc..9ff479e7459a 100644
--- a/drivers/pinctrl/mediatek/pinctrl-mt6397.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mt6397.c
@@ -59,3 +59,6 @@ static struct platform_driver mtk_pinctrl_driver = {
 };
 
 builtin_platform_driver(mtk_pinctrl_driver);
+
+MODULE_DESCRIPTION("MediaTek MT6397 Pinctrl Driver");
+MODULE_LICENSE("GPL v2");
-- 
2.45.2