platform/x86: amd: pmc: Remove __maybe_unused from amd_pmc_suspend_handler()

Now that the pmc code has switched to DEFINE_SIMPLE_DEV_PM_OPS()
the __maybe_unused is no longer necessary, drop it.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20230410193512.64232-1-hdegoede@redhat.com

drivers/platform/x86/amd/pmc.c

@@ -859,7 +859,7 @@ static struct acpi_s2idle_dev_ops amd_pmc_s2idle_dev_ops = {
 	.restore = amd_pmc_s2idle_restore,
 };
 
-static int __maybe_unused amd_pmc_suspend_handler(struct device *dev)
+static int amd_pmc_suspend_handler(struct device *dev)
 {
 	struct amd_pmc_dev *pdev = dev_get_drvdata(dev);