spi: spi-mem: stm32-qspi: stm32_qspi_pm_ops can be static

Fixes: 2e541b64 ("spi: spi-mem: stm32-qspi: add suspend/resume support")
Signed-off-by: Nkbuild test robot <lkp@intel.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

drivers/spi/spi-stm32-qspi.c

@@ -517,7 +517,7 @@ static int __maybe_unused stm32_qspi_resume(struct device *dev)
 	return 0;
 }
 
-SIMPLE_DEV_PM_OPS(stm32_qspi_pm_ops, stm32_qspi_suspend, stm32_qspi_resume);
+static SIMPLE_DEV_PM_OPS(stm32_qspi_pm_ops, stm32_qspi_suspend, stm32_qspi_resume);
 
 static const struct of_device_id stm32_qspi_match[] = {
 	{.compatible = "st,stm32f469-qspi"},