common: Drop net.h from common header

Move this header out of the common header. Network support is used in
quite a few places but it still does not warrant blanket inclusion.

Note that this net.h header itself has quite a lot in it. It could be
split into the driver-mode support, functions, structures, checksumming,
etc.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/mtd/nand/raw/denali.c b/drivers/mtd/nand/raw/denali.c
index 3a09a81..a58d7ce 100644
--- a/drivers/mtd/nand/raw/denali.c
+++ b/drivers/mtd/nand/raw/denali.c
@@ -5,9 +5,12 @@
  * Copyright (C) 2009-2010, Intel Corporation and its suppliers.
  */
 
+#include <common.h>
 #include <dm.h>
 #include <malloc.h>
 #include <nand.h>
+#include <asm/cache.h>
+#include <asm/dma-mapping.h>
 #include <dm/device_compat.h>
 #include <dm/devres.h>
 #include <linux/bitfield.h>
diff --git a/drivers/mtd/nand/raw/mxs_nand.c b/drivers/mtd/nand/raw/mxs_nand.c
index e3516cd..a7852a8 100644
--- a/drivers/mtd/nand/raw/mxs_nand.c
+++ b/drivers/mtd/nand/raw/mxs_nand.c
@@ -16,6 +16,7 @@
 #include <common.h>
 #include <cpu_func.h>
 #include <dm.h>
+#include <asm/cache.h>
 #include <linux/mtd/rawnand.h>
 #include <linux/sizes.h>
 #include <linux/types.h>
diff --git a/drivers/mtd/nand/raw/mxs_nand_spl.c b/drivers/mtd/nand/raw/mxs_nand_spl.c
index ae50cc3..7bfcbf0 100644
--- a/drivers/mtd/nand/raw/mxs_nand_spl.c
+++ b/drivers/mtd/nand/raw/mxs_nand_spl.c
@@ -8,6 +8,7 @@
 #include <nand.h>
 #include <malloc.h>
 #include <mxs_nand.h>
+#include <asm/cache.h>
 #include <linux/err.h>
 
 static struct mtd_info *mtd;
diff --git a/drivers/mtd/nand/raw/nand_util.c b/drivers/mtd/nand/raw/nand_util.c
index f3c8f7f..9c4af8a 100644
--- a/drivers/mtd/nand/raw/nand_util.c
+++ b/drivers/mtd/nand/raw/nand_util.c
@@ -24,6 +24,7 @@
 #include <malloc.h>
 #include <memalign.h>
 #include <div64.h>
+#include <asm/cache.h>
 #include <dm/devres.h>
 
 #include <linux/errno.h>