Input: cros-ec-keyb - 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 __maybe_unused markings.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Stephen Boyd <swboyd@chromium.org>
Link: https://lore.kernel.org/r/20221204180841.2211588-4-jic23@kernel.orgSigned-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

drivers/input/keyboard/cros_ec_keyb.c

@@ -415,7 +415,7 @@ static int cros_ec_keyb_query_switches(struct cros_ec_keyb *ckdev)
  *
  * Returns 0 if no error or -error upon error.
  */
-static __maybe_unused int cros_ec_keyb_resume(struct device *dev)
+static int cros_ec_keyb_resume(struct device *dev)
 {
 	struct cros_ec_keyb *ckdev = dev_get_drvdata(dev);
 
@@ -760,7 +760,7 @@ static const struct of_device_id cros_ec_keyb_of_match[] = {
 MODULE_DEVICE_TABLE(of, cros_ec_keyb_of_match);
 #endif
 
-static SIMPLE_DEV_PM_OPS(cros_ec_keyb_pm_ops, NULL, cros_ec_keyb_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(cros_ec_keyb_pm_ops, NULL, cros_ec_keyb_resume);
 
 static struct platform_driver cros_ec_keyb_driver = {
 	.probe = cros_ec_keyb_probe,
@@ -769,7 +769,7 @@ static struct platform_driver cros_ec_keyb_driver = {
 		.name = "cros-ec-keyb",
 		.of_match_table = of_match_ptr(cros_ec_keyb_of_match),
 		.acpi_match_table = ACPI_PTR(cros_ec_keyb_acpi_match),
-		.pm = &cros_ec_keyb_pm_ops,
+		.pm = pm_sleep_ptr(&cros_ec_keyb_pm_ops),
 	},
 };