[PATCH] pinctrl: stmfx: Fix compile issue when CONFIG_OF_GPIO is not defined

[Amelie Delaunay <amelie.delaunay@xxxxxx>]

When CONFIG_GPIO_OF is not defined, struct gpio_chip 'of_node' member does
not exist:
drivers/pinctrl/pinctrl-stmfx.c: In function 'stmfx_pinctrl_probe':
drivers/pinctrl/pinctrl-stmfx.c:652:17: error: 'struct gpio_chip' has no member named 'of_node'
     pctl->gpio_chip.of_node = np;

Fixes: 1490d9f841b1 ("pinctrl: Add STMFX GPIO expander Pinctrl/GPIO driver")
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Signed-off-by: Amelie Delaunay <amelie.delaunay@xxxxxx>
---
 drivers/pinctrl/pinctrl-stmfx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-stmfx.c b/drivers/pinctrl/pinctrl-stmfx.c
index eba872c..bb64aa0 100644
--- a/drivers/pinctrl/pinctrl-stmfx.c
+++ b/drivers/pinctrl/pinctrl-stmfx.c
@@ -648,7 +648,9 @@ static int stmfx_pinctrl_probe(struct platform_device *pdev)
 	pctl->gpio_chip.base = -1;
 	pctl->gpio_chip.ngpio = pctl->pctl_desc.npins;
 	pctl->gpio_chip.can_sleep = true;
+#ifdef CONFIG_OF_GPIO
 	pctl->gpio_chip.of_node = np;
+#endif
 	pctl->gpio_chip.need_valid_mask = true;
 
 	ret = devm_gpiochip_add_data(pctl->dev, &pctl->gpio_chip, pctl);
-- 
2.7.4