ddr: Remove <common.h> and add needed includes

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

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/drivers/ddr/fsl/mpc85xx_ddr_gen1.c b/drivers/ddr/fsl/mpc85xx_ddr_gen1.c
index 16186bd..a852075 100644
--- a/drivers/ddr/fsl/mpc85xx_ddr_gen1.c
+++ b/drivers/ddr/fsl/mpc85xx_ddr_gen1.c
@@ -3,7 +3,7 @@
  * Copyright 2008 Freescale Semiconductor, Inc.
  */
 
-#include <common.h>
+#include <config.h>
 #include <log.h>
 #include <asm/io.h>
 #include <fsl_ddr_sdram.h>