fbcon: break earlier in search_fb_in_map and search_for_mapped_con

Break the for loop immediately upon finding the target, making the
process more efficient.
Signed-off-by: Qianqiang Liu <qianqiang.liu@163.com>
Signed-off-by: Helge Deller <deller@gmx.de>

drivers/video/fbdev/core/fbcon.c

@@ -512,8 +512,10 @@ static int search_fb_in_map(int idx)
 	int i, retval = 0;
 
 	for (i = first_fb_vc; i <= last_fb_vc; i++) {
-		if (con2fb_map[i] == idx)
+		if (con2fb_map[i] == idx) {
 			retval = 1;
+			break;
+		}
 	}
 	return retval;
 }
@@ -523,8 +525,10 @@ static int search_for_mapped_con(void)
 	int i, retval = 0;
 
 	for (i = first_fb_vc; i <= last_fb_vc; i++) {
-		if (con2fb_map[i] != -1)
+		if (con2fb_map[i] != -1) {
 			retval = 1;
+			break;
+		}
 	}
 	return retval;
 }