[PATCH 1/7] hwrng: npcm - Fix W=1 unused variable warning

["Herbert Xu" <herbert@xxxxxxxxxxxxxxxxxxx>]

This patch fixes an unused variable warning when this driver is
built-in with CONFIG_OF=n.

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
---

 drivers/char/hw_random/npcm-rng.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/char/hw_random/npcm-rng.c b/drivers/char/hw_random/npcm-rng.c
index 01d04404d8c04..5d0d13f891b70 100644
--- a/drivers/char/hw_random/npcm-rng.c
+++ b/drivers/char/hw_random/npcm-rng.c
@@ -161,7 +161,7 @@ static const struct dev_pm_ops npcm_rng_pm_ops = {
 				pm_runtime_force_resume)
 };
 
-static const struct of_device_id rng_dt_id[] = {
+static const struct of_device_id rng_dt_id[] __maybe_unused = {
 	{ .compatible = "nuvoton,npcm750-rng",  },
 	{},
 };