Without CONFIG_OF, we run into a build error:

drivers/pinctrl/sprd/pinctrl-sprd.c: In function 'sprd_dt_node_to_map':
drivers/pinctrl/sprd/pinctrl-sprd.c:290:8: error: implicit declaration of function 'pinconf_generic_parse_dt_config'; did you mean 'pinconf_generic_dump_config'? [-Werror=implicit-function-declaration]

This adds a Kconfig dependency for it.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/pinctrl/sprd/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/pinctrl/sprd/Kconfig b/drivers/pinctrl/sprd/Kconfig
index ec21b8bae487..e75cde2e1b46 100644
--- a/drivers/pinctrl/sprd/Kconfig
+++ b/drivers/pinctrl/sprd/Kconfig

@@ -4,6 +4,7 @@
 
 config PINCTRL_SPRD
 	bool "Spreadtrum pinctrl driver"
+	depends on OF
 	select PINMUX
 	select PINCONF
 	select GENERIC_PINCONF

-- 
2.9.0