Input: goodix - use "inverted_[xy]" flags instead of "rotated_screen"

The goodix touchscreen driver uses a "rotated_screen" flag for
systems on which the touchscreen is mounted rotated by 180
degrees with respect to the display. With the addition of
support for the dt properties "touchscreen-inverted-x" and
"touchscreen-inverted-y", a separate "rotated_screen" flag
is not necessary anymore. This patch replaces it by setting
the inverted_x and inverted_y flags instead.

Signed-off-by: Karsten Merker <[e-mail]>
Reviewed-by: Irina Tirdea <[e-mail]>
Tested-by: Bastien Nocera <[e-mail]>
Acked-by: Bastien Nocera <[e-mail]>
Signed-off-by: Dmitry Torokhov <[e-mail]>

drivers/input/touchscreen/goodix.c

···
 	bool inverted_y;
 	unsigned int max_touch_num;
 	unsigned int int_trigger_type;
-	bool rotated_screen;
 	int cfg_len;
 	struct gpio_desc *gpiod_int;
 	struct gpio_desc *gpiod_rst;
···
 	int input_x = get_unaligned_le16(&coor_data[1]);
 	int input_y = get_unaligned_le16(&coor_data[3]);
 	int input_w = get_unaligned_le16(&coor_data[5]);
-
-	if (ts->rotated_screen) {
-		input_x = ts->abs_x_max - input_x;
-		input_y = ts->abs_y_max - input_y;
-	}
 
 	/* Inversions have to happen before axis swapping */
 	if (ts->inverted_x)
···
 		ts->max_touch_num = GOODIX_MAX_CONTACTS;
 	}
 
-	ts->rotated_screen = dmi_check_system(rotated_screen);
-	if (ts->rotated_screen)
+	if (dmi_check_system(rotated_screen)) {
+		ts->inverted_x = true;
+		ts->inverted_y = true;
 		dev_dbg(&ts->client->dev,
 			 "Applying '180 degrees rotated screen' quirk\n");
+	}
 }
 
 /**