Input: pmic8xxx-keypad - switch to DEFINE_SIMPLE_DEV_PM_OPS() and pm_sleep_ptr()

SIMPLE_DEV_PM_OPS() is deprecated as it requires explicit protection
against unused function warnings. The new combination of pm_sleep_ptr()
and DEFINE_SIMPLE_DEV_PM_OPS() allows the compiler to see the functions,
thus suppressing the warning, but still allowing the unused code to be
removed. Thus also drop the ifdef guards.

Signed-off-by: Jonathan Cameron <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/keyboard/pmic8xxx-keypad.c

···
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int pmic8xxx_kp_suspend(struct device *dev)
 {
 	struct platform_device *pdev = to_platform_device(dev);
···
 
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(pm8xxx_kp_pm_ops,
-			 pmic8xxx_kp_suspend, pmic8xxx_kp_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(pm8xxx_kp_pm_ops,
+				pmic8xxx_kp_suspend, pmic8xxx_kp_resume);
 
 static const struct of_device_id pm8xxx_match_table[] = {
 	{ .compatible = "qcom,pm8058-keypad" },
···
 	.probe		= pmic8xxx_kp_probe,
 	.driver		= {
 		.name = "pm8xxx-keypad",
-		.pm = &pm8xxx_kp_pm_ops,
+		.pm = pm_sleep_ptr(&pm8xxx_kp_pm_ops),
 		.of_match_table = pm8xxx_match_table,
 	},
 };