board/[m-p]*: Remove obsolete references to CONFIG_COMMANDS

Signed-off-by: Jon Loeliger <jdl@freescale.com>
diff --git a/board/mpl/common/common_util.h b/board/mpl/common/common_util.h
index 20f891f..d4b1f68 100644
--- a/board/mpl/common/common_util.h
+++ b/board/mpl/common/common_util.h
@@ -39,7 +39,7 @@
 
 void show_stdio_dev(void);
 void check_env(void);
-#if (CONFIG_COMMANDS & CFG_CMD_DOC) || defined(CONFIG_CMD_DOC)
+#if defined(CONFIG_CMD_DOC)
 void doc_init (void);
 #endif