cfb_console: Ignore bell character

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
diff --git a/drivers/video/cfb_console.c b/drivers/video/cfb_console.c
index 6fa61d2..b38cbd4 100644
--- a/drivers/video/cfb_console.c
+++ b/drivers/video/cfb_console.c
@@ -803,6 +803,9 @@
 		console_back();
 		break;
 
+	case 7:		/* bell */
+		break;	/* ignored */
+
 	default:		/* draw the char */
 		video_putchar(console_col * VIDEO_FONT_WIDTH,
 			      console_row * VIDEO_FONT_HEIGHT, c);