HID: i2c-hid: Switch to SYSTEM_SLEEP_PM_OPS()

The SYSTEM_SLEEP_PM_OPS() allows us to get rid of '#ifdef
CONFIG_PM_SLEEP', as talked about in commit 1a3c7bb0 ("PM: core:
Add new *_PM_OPS macros, deprecate old ones").

This change is expected to have no functional effect.
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Benjamin Tissoires <bentiss@kernel.org>
Acked-by: Benjamin Tissoires <bentiss@kernel.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230727101636.v4.5.Ib2a2865bd3c0b068432259dfc7d76cebcbb512be@changeid

drivers/hid/i2c-hid/i2c-hid-core.c

@@ -1085,7 +1085,6 @@ void i2c_hid_core_shutdown(struct i2c_client *client)
 }
 EXPORT_SYMBOL_GPL(i2c_hid_core_shutdown);
 
-#ifdef CONFIG_PM_SLEEP
 static int i2c_hid_core_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
@@ -1138,10 +1137,9 @@ static int i2c_hid_core_resume(struct device *dev)
 
 	return hid_driver_reset_resume(hid);
 }
-#endif
 
 const struct dev_pm_ops i2c_hid_core_pm = {
-	SET_SYSTEM_SLEEP_PM_OPS(i2c_hid_core_suspend, i2c_hid_core_resume)
+	SYSTEM_SLEEP_PM_OPS(i2c_hid_core_suspend, i2c_hid_core_resume)
 };
 EXPORT_SYMBOL_GPL(i2c_hid_core_pm);