Fix build errors and warnings / code cleanup.

Signed-off-by: Wolfgang Denk <wd@denx.de>
diff --git a/include/configs/MPC8266ADS.h b/include/configs/MPC8266ADS.h
index 3a6c977..14b041e 100644
--- a/include/configs/MPC8266ADS.h
+++ b/include/configs/MPC8266ADS.h
@@ -165,6 +165,7 @@
 #undef CONFIG_CMD_IDE
 #undef CONFIG_CMD_JFFS2
 #undef CONFIG_CMD_KGDB
+#undef CONFIG_CMD_MFSL
 #undef CONFIG_CMD_MMC
 #undef CONFIG_CMD_NAND
 #undef CONFIG_CMD_PCMCIA