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>

drivers/pci/pci-aardvark.c

@@ -29,6 +29,7 @@
 #include <pci.h>
 #include <asm/io.h>
 #include <asm-generic/gpio.h>
+#include <dm/device_compat.h>
 #include <linux/ioport.h>
 
 /* PCIe core registers */

drivers/pci/pci-uclass.c

@@ -7,6 +7,7 @@
 #include <common.h>
 #include <dm.h>
 #include <errno.h>
+#include <malloc.h>
 #include <pci.h>
 #include <asm/io.h>
 #include <dm/device-internal.h>

drivers/pci/pci_mvebu.c

@@ -11,6 +11,7 @@
 
 #include <common.h>
 #include <dm.h>
+#include <malloc.h>
 #include <dm/device-internal.h>
 #include <dm/lists.h>
 #include <dm/of_access.h>

drivers/pci/pcie_dw_ti.c

@@ -12,6 +12,7 @@
 #include <syscon.h>
 #include <asm/io.h>
 #include <asm-generic/gpio.h>
+#include <dm/device_compat.h>
 #include <linux/err.h>
 
 DECLARE_GLOBAL_DATA_PTR;

drivers/pci/pcie_fsl.c

@@ -15,6 +15,7 @@
 #include <asm/fsl_serdes.h>
 #include <asm/io.h>
 #include "pcie_fsl.h"
+#include <dm/device_compat.h>
 
 LIST_HEAD(fsl_pcie_list);
 

drivers/pci/pcie_imx.c

@@ -11,6 +11,7 @@
 
 #include <common.h>
 #include <init.h>
+#include <malloc.h>
 #include <pci.h>
 #include <asm/arch/clock.h>
 #include <asm/arch/iomux.h>

drivers/pci/pcie_intel_fpga.c

@@ -10,6 +10,7 @@
 #include <dm.h>
 #include <pci.h>
 #include <asm/io.h>
+#include <dm/device_compat.h>
 
 #define RP_TX_REG0			0x2000
 #define RP_TX_CNTRL			0x2004

drivers/pci/pcie_mediatek.c

@@ -11,6 +11,7 @@
 #include <clk.h>
 #include <dm.h>
 #include <generic-phy.h>
+#include <malloc.h>
 #include <pci.h>
 #include <reset.h>
 #include <asm/io.h>