[PATCH] mdacon.c warning fix.

From: "Luiz Fernando N. Capitulino" <lcapitulino@prefeitura.sp.gov.br>

drivers/video/console/mdacon.c:599: warning: initialization from incompatible pointer type

drivers/video/console/mdacon.c

@@ -502,7 +502,7 @@ static int mdacon_set_palette(struct vc_data *c, unsigned char *table)
 	return -EINVAL;
 }
 
-static int mdacon_blank(struct vc_data *c, int blank)
+static int mdacon_blank(struct vc_data *c, int blank, int mode_switch)
 {
 	if (mda_type == TYPE_MDA) {
 		if (blank)