dm: core: Create a new header file for 'compat' features

At present dm/device.h includes the linux-compatible features. This
requires including linux/compat.h which in turn includes a lot of headers.
One of these is malloc.h which we thus end up including in every file in
U-Boot. Apart from the inefficiency of this, it is problematic for sandbox
which needs to use the system malloc() in some files.

Move the compatibility features into a separate header file.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/drivers/mtd/nand/spi/core.c b/drivers/mtd/nand/spi/core.c
index d976c19..cd624ec 100644
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -24,6 +24,7 @@
 #include <errno.h>
 #include <spi.h>
 #include <spi-mem.h>
+#include <dm/device_compat.h>
 #include <dm/devres.h>
 #include <linux/mtd/spinand.h>
 #endif
diff --git a/drivers/mtd/nand/spi/gigadevice.c b/drivers/mtd/nand/spi/gigadevice.c
index e329c3c..0b228dc 100644
--- a/drivers/mtd/nand/spi/gigadevice.c
+++ b/drivers/mtd/nand/spi/gigadevice.c
@@ -7,6 +7,7 @@
  */
 
 #ifndef __UBOOT__
+#include <malloc.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #endif
diff --git a/drivers/mtd/nand/spi/macronix.c b/drivers/mtd/nand/spi/macronix.c
index 1119677..67d092b 100644
--- a/drivers/mtd/nand/spi/macronix.c
+++ b/drivers/mtd/nand/spi/macronix.c
@@ -6,6 +6,7 @@
  */
 
 #ifndef __UBOOT__
+#include <malloc.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #endif
diff --git a/drivers/mtd/nand/spi/micron.c b/drivers/mtd/nand/spi/micron.c
index 9c24542..687306e 100644
--- a/drivers/mtd/nand/spi/micron.c
+++ b/drivers/mtd/nand/spi/micron.c
@@ -7,6 +7,7 @@
  */
 
 #ifndef __UBOOT__
+#include <malloc.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #endif
diff --git a/drivers/mtd/nand/spi/winbond.c b/drivers/mtd/nand/spi/winbond.c
index de9352e..6ede98c 100644
--- a/drivers/mtd/nand/spi/winbond.c
+++ b/drivers/mtd/nand/spi/winbond.c
@@ -8,6 +8,7 @@
  */
 
 #ifndef __UBOOT__
+#include <malloc.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #endif