Cleanup for GCC-4.x
diff --git a/board/amcc/ebony/ebony.c b/board/amcc/ebony/ebony.c
index f6bb837..9191f0f 100644
--- a/board/amcc/ebony/ebony.c
+++ b/board/amcc/ebony/ebony.c
@@ -91,7 +91,7 @@
 int checkboard(void)
 {
 	sys_info_t sysinfo;
-	unsigned char *s = getenv("serial#");
+	char *s = getenv("serial#");
 
 	get_sys_info(&sysinfo);