[PATCH] iio: proximity: isl29501: fix unused of_device_id table

[Ben Dooks <ben.dooks@codethink.co.uk>]

Under certain build conditions, the following warning is being generated
from the isl29501 driver due to OF being configured but the driver being
built in.

drivers/iio/proximity/isl29501.c:999:34: warning: ‘isl29501_i2c_matches’ defined but not used [-Wunused-const-variable=]
  999 | static const struct of_device_id isl29501_i2c_matches[] = {

The isl29501_i2c_matches[] is only passed to MODULE_DEVICE_TABLE() and thus is
not referenced if the driver is built into the kernel. Fix by adding a check
for MODULE around the #if block.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
 drivers/iio/proximity/isl29501.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/proximity/isl29501.c b/drivers/iio/proximity/isl29501.c
index bcebacaf3dab..d509227f47b7 100644
--- a/drivers/iio/proximity/isl29501.c
+++ b/drivers/iio/proximity/isl29501.c
@@ -995,7 +995,7 @@ static const struct i2c_device_id isl29501_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, isl29501_id);
 
-#if defined(CONFIG_OF)
+#if defined(CONFIG_OF) && defined(MODULE)
 static const struct of_device_id isl29501_i2c_matches[] = {
 	{ .compatible = "renesas,isl29501" },
 	{ }
-- 
2.37.2.352.g3c44437643