expo: Rename x and y in struct scene_obj_bbox

These coordinates are the top left values, so rename them to x0 and y0
in preparation for changing the width and height to x1 and y1

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/boot/scene.c b/boot/scene.c
index a0060c6..49dac90 100644
--- a/boot/scene.c
+++ b/boot/scene.c
@@ -210,8 +210,8 @@
 	obj = scene_obj_find(scn, id, SCENEOBJT_NONE);
 	if (!obj)
 		return log_msg_ret("find", -ENOENT);
-	obj->bbox.x = x;
-	obj->bbox.y = y;
+	obj->bbox.x0 = x;
+	obj->bbox.y0 = y;
 
 	return 0;
 }
@@ -368,8 +368,8 @@
 	struct udevice *cons = text_mode ? NULL : exp->cons;
 	int x, y, ret;
 
-	x = obj->bbox.x;
-	y = obj->bbox.y;
+	x = obj->bbox.x0;
+	y = obj->bbox.y0;
 
 	switch (obj->type) {
 	case SCENEOBJT_NONE:
@@ -915,15 +915,15 @@
 	if (!obj)
 		return log_msg_ret("obj", -ENOENT);
 	if (bbox->valid) {
-		bbox->x0 = min(bbox->x0, obj->bbox.x - inset);
-		bbox->y0 = min(bbox->y0, obj->bbox.y);
-		bbox->x1 = max(bbox->x1, obj->bbox.x + obj->bbox.w + inset);
-		bbox->y1 = max(bbox->y1, obj->bbox.y + obj->bbox.h);
+		bbox->x0 = min(bbox->x0, obj->bbox.x0 - inset);
+		bbox->y0 = min(bbox->y0, obj->bbox.y0);
+		bbox->x1 = max(bbox->x1, obj->bbox.x0 + obj->bbox.w + inset);
+		bbox->y1 = max(bbox->y1, obj->bbox.y0 + obj->bbox.h);
 	} else {
-		bbox->x0 = obj->bbox.x - inset;
-		bbox->y0 = obj->bbox.y;
-		bbox->x1 = obj->bbox.x + obj->bbox.w + inset;
-		bbox->y1 = obj->bbox.y + obj->bbox.h;
+		bbox->x0 = obj->bbox.x0 - inset;
+		bbox->y0 = obj->bbox.y0;
+		bbox->x1 = obj->bbox.x0 + obj->bbox.w + inset;
+		bbox->y1 = obj->bbox.y0 + obj->bbox.h;
 		bbox->valid = true;
 	}
 
diff --git a/boot/scene_menu.c b/boot/scene_menu.c
index 20a6a6b..c47c203 100644
--- a/boot/scene_menu.c
+++ b/boot/scene_menu.c
@@ -102,7 +102,7 @@
 		label = scene_obj_find(scn, item->label_id, SCENEOBJT_NONE);
 
 		ret = scene_obj_set_pos(scn, menu->pointer_id,
-					menu->obj.bbox.x + 200, label->bbox.y);
+					menu->obj.bbox.x0 + 200, label->bbox.y0);
 		if (ret < 0)
 			return log_msg_ret("ptr", ret);
 	}
@@ -205,12 +205,12 @@
 	int x, y;
 	int ret;
 
-	x = menu->obj.bbox.x;
-	y = menu->obj.bbox.y;
+	x = menu->obj.bbox.x0;
+	y = menu->obj.bbox.y0;
 	if (menu->title_id) {
 		int width;
 
-		ret = scene_obj_set_pos(scn, menu->title_id, menu->obj.bbox.x, y);
+		ret = scene_obj_set_pos(scn, menu->title_id, menu->obj.bbox.x0, y);
 		if (ret < 0)
 			return log_msg_ret("tit", ret);
 
diff --git a/boot/scene_textline.c b/boot/scene_textline.c
index 5b4e21e..a513d55 100644
--- a/boot/scene_textline.c
+++ b/boot/scene_textline.c
@@ -94,16 +94,16 @@
 	int x, y;
 	int ret;
 
-	x = tline->obj.bbox.x;
-	y = tline->obj.bbox.y;
+	x = tline->obj.bbox.x0;
+	y = tline->obj.bbox.y0;
 	if (tline->label_id) {
-		ret = scene_obj_set_pos(scn, tline->label_id, tline->obj.bbox.x,
-					y);
+		ret = scene_obj_set_pos(scn, tline->label_id,
+					tline->obj.bbox.x0, y);
 		if (ret < 0)
 			return log_msg_ret("tit", ret);
 
 		ret = scene_obj_set_pos(scn, tline->edit_id,
-					tline->obj.bbox.x + 200, y);
+					tline->obj.bbox.x0 + 200, y);
 		if (ret < 0)
 			return log_msg_ret("tit", ret);
 
@@ -197,8 +197,8 @@
 		if (ret)
 			return log_msg_ret("sav", ret);
 
-		vidconsole_set_cursor_visible(cons, true, txt->obj.bbox.x,
-					      txt->obj.bbox.y, scn->cls.num);
+		vidconsole_set_cursor_visible(cons, true, txt->obj.bbox.x0,
+					      txt->obj.bbox.y0, scn->cls.num);
 	}
 
 	return 0;
@@ -219,7 +219,7 @@
 	if (!txt)
 		return log_msg_ret("cur", -ENOENT);
 
-	vidconsole_set_cursor_pos(cons, txt->obj.bbox.x, txt->obj.bbox.y);
+	vidconsole_set_cursor_pos(cons, txt->obj.bbox.x0, txt->obj.bbox.y0);
 	vidconsole_entry_start(cons);
 	cli_cread_init(&scn->cls, abuf_data(&tline->buf), tline->max_chars);
 	scn->cls.insert = true;