Compier warning cleanup

Follow up to git commit: 19b5b533

Cleanup on compiler warnings on unused variables now that
bd->bi_enetaddr is no longer used.
Signed-off-by: NRichard Retanubun <RichardRetanubun@RuggedCom.com>

lib_m68k/board.c

@@ -438,9 +438,8 @@ board_init_f (ulong bootflag)
 void board_init_r (gd_t *id, ulong dest_addr)
 {
 	cmd_tbl_t *cmdtp;
-	char *s, *e;
+	char *s;
 	bd_t *bd;
-	int i;
 	extern void malloc_bin_reloc (void);
 
 #ifndef CONFIG_ENV_IS_NOWHERE