Input: ad7879 - add open and close methods

Tested-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/touchscreen/ad7879-i2c.c b/drivers/input/touchscreen/ad7879-i2c.c
index 85dfdd2..81937b2 100644
--- a/drivers/input/touchscreen/ad7879-i2c.c
+++ b/drivers/input/touchscreen/ad7879-i2c.c
@@ -20,7 +20,7 @@
 {
 	struct ad7879 *ts = i2c_get_clientdata(client);
 
-	ad7879_disable(ts);
+	ad7879_suspend(ts);
 
 	return 0;
 }
@@ -29,7 +29,7 @@
 {
 	struct ad7879 *ts = i2c_get_clientdata(client);
 
-	ad7879_enable(ts);
+	ad7879_resume(ts);
 
 	return 0;
 }