[PATCH net-next] ksz884x: mark pcidev_suspend() as __maybe_unused

[Wei Yongjun]

In certain configurations without power management support, gcc report
the following warning:

drivers/net/ethernet/micrel/ksz884x.c:7182:12: warning:
 'pcidev_suspend' defined but not used [-Wunused-function]
 7182 | static int pcidev_suspend(struct device *dev_d)
      |            ^~~~~~~~~~~~~~

Mark pcidev_suspend() as __maybe_unused to make it clear.

Fixes: 64120615d140 ("ksz884x: use generic power management")
Reported-by: Hulk Robot <hul...@huawei.com>
Signed-off-by: Wei Yongjun <weiyongj...@huawei.com>
---
 drivers/net/ethernet/micrel/ksz884x.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/micrel/ksz884x.c 
b/drivers/net/ethernet/micrel/ksz884x.c
index 24901342ecc0..2ce7304d3753 100644
--- a/drivers/net/ethernet/micrel/ksz884x.c
+++ b/drivers/net/ethernet/micrel/ksz884x.c
@@ -7179,7 +7179,7 @@ static int __maybe_unused pcidev_resume(struct device 
*dev_d)
        return 0;
 }
 
-static int pcidev_suspend(struct device *dev_d)
+static int __maybe_unused pcidev_suspend(struct device *dev_d)
 {
        int i;
        struct platform_info *info = dev_get_drvdata(dev_d);