Input: touchscreen - use __maybe_unused instead of ifdef around suspend/resume

Use __maybe_unused instead of ifdef guards around suspend/resume
functions, in order to increase build coverage and fix build warnings.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
diff --git a/drivers/input/touchscreen/auo-pixcir-ts.c b/drivers/input/touchscreen/auo-pixcir-ts.c
index 7f3c947..40e02dd 100644
--- a/drivers/input/touchscreen/auo-pixcir-ts.c
+++ b/drivers/input/touchscreen/auo-pixcir-ts.c
@@ -417,8 +417,7 @@
 	return;
 }
 
-#ifdef CONFIG_PM_SLEEP
-static int auo_pixcir_suspend(struct device *dev)
+static int __maybe_unused auo_pixcir_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct auo_pixcir_ts *ts = i2c_get_clientdata(client);
@@ -450,7 +449,7 @@
 	return ret;
 }
 
-static int auo_pixcir_resume(struct device *dev)
+static int __maybe_unused auo_pixcir_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct auo_pixcir_ts *ts = i2c_get_clientdata(client);
@@ -479,7 +478,6 @@
 
 	return ret;
 }
-#endif
 
 static SIMPLE_DEV_PM_OPS(auo_pixcir_pm_ops,
 			 auo_pixcir_suspend, auo_pixcir_resume);