board: freescale: Remove <common.h> and add needed includes

Remove <common.h> from this board vendor directory and when needed
add missing include files directly.

Acked-by: Jason Liu <jason.hui.liu@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/freescale/ls1021aqds/ddr.c b/board/freescale/ls1021aqds/ddr.c
index 4e70acc..5b0f236 100644
--- a/board/freescale/ls1021aqds/ddr.c
+++ b/board/freescale/ls1021aqds/ddr.c
@@ -3,7 +3,7 @@
  * Copyright 2014 Freescale Semiconductor, Inc.
  */
 
-#include <common.h>
+#include <config.h>
 #include <fsl_ddr_sdram.h>
 #include <fsl_ddr_dimm_params.h>
 #include <init.h>