Input: hideep - 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 <[e-mail]>
Cc: Anthony Kim <[e-mail]>
Reviewed-by: Linus Walleij <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/touchscreen/hideep.c

···
 	.attrs = hideep_ts_sysfs_entries,
 };
 
-static int __maybe_unused hideep_suspend(struct device *dev)
+static int hideep_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct hideep_ts *ts = i2c_get_clientdata(client);
···
 	return 0;
 }
 
-static int __maybe_unused hideep_resume(struct device *dev)
+static int hideep_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct hideep_ts *ts = i2c_get_clientdata(client);
···
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(hideep_pm_ops, hideep_suspend, hideep_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(hideep_pm_ops, hideep_suspend, hideep_resume);
 
 static const struct regmap_config hideep_regmap_config = {
 	.reg_bits = 16,
···
 		.name			= HIDEEP_I2C_NAME,
 		.of_match_table		= of_match_ptr(hideep_match_table),
 		.acpi_match_table	= ACPI_PTR(hideep_acpi_id),
-		.pm			= &hideep_pm_ops,
+		.pm			= pm_sleep_ptr(&hideep_pm_ops),
 	},
 	.id_table	= hideep_i2c_id,
 	.probe_new	= hideep_probe,