[PATCH 11/12] regulator: stm32-vrefbuf: Fix W=1 build warning when CONFIG_OF=n

[Jisheng Zhang]

Fix below warning when CONFIG_OF=n:

drivers/regulator/stm32-vrefbuf.c:287:34: warning: ‘stm32_vrefbuf_of_match’ defined but not used [-Wunused-const-variable=]
  287 | static const struct of_device_id stm32_vrefbuf_of_match[] = {
      |                                  ^~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@xxxxxxxxxxxxx>
---
 drivers/regulator/stm32-vrefbuf.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/regulator/stm32-vrefbuf.c b/drivers/regulator/stm32-vrefbuf.c
index 992bc18101ef..5a5c12d9ea22 100644
--- a/drivers/regulator/stm32-vrefbuf.c
+++ b/drivers/regulator/stm32-vrefbuf.c
@@ -284,11 +284,13 @@ static const struct dev_pm_ops stm32_vrefbuf_pm_ops = {
 			   NULL)
 };
 
+#ifdef CONFIG_OF
 static const struct of_device_id stm32_vrefbuf_of_match[] = {
 	{ .compatible = "st,stm32-vrefbuf", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, stm32_vrefbuf_of_match);
+#endif
 
 static struct platform_driver stm32_vrefbuf_driver = {
 	.probe = stm32_vrefbuf_probe,
-- 
2.28.0