Cleanup for GCC-4.x
diff --git a/cpu/mpc8xx/video.c b/cpu/mpc8xx/video.c
index f2b8814..ee60477 100644
--- a/cpu/mpc8xx/video.c
+++ b/cpu/mpc8xx/video.c
@@ -447,9 +447,9 @@
 	}
 }
 
-static inline void video_drawstring (int xx, int yy, unsigned char *s)
+static inline void video_drawstring (int xx, int yy, char *s)
 {
-	video_drawchars (xx, yy, s, strlen (s));
+	video_drawchars (xx, yy, (unsigned char *)s, strlen (s));
 }
 
 /* Relative to console plotting functions */
@@ -474,7 +474,7 @@
 
 static inline void video_putstring (int xx, int yy, unsigned char *s)
 {
-	video_putchars (xx, yy, s, strlen (s));
+	video_putchars (xx, yy, (unsigned char *)s, strlen ((char *)s));
 }
 
 /************************************************************************/