ARM: kirkwood: Trim excess #includes in board-dnskw.c

Lots of code has now moved into the devicetree, leaving a collection of
useless header files. Tidy them up.

This applies cleanly atop of my previous patch, "[PATCH V2 2/2] ARM:
kirkwood: Use devicetree to define DNS-32[05] fan", which also removes
gpio-fan.h

Signed-off-by: Jamie Lentin <jm@lentin.co.uk>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>

arch/arm/mach-kirkwood/board-dnskw.c

@@ -14,17 +14,8 @@
 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/platform_device.h>
-#include <linux/ata_platform.h>
 #include <linux/mv643xx_eth.h>
-#include <linux/of.h>
 #include <linux/gpio.h>
-#include <linux/input.h>
-#include <linux/leds.h>
-#include <asm/mach-types.h>
-#include <asm/mach/arch.h>
-#include <asm/mach/map.h>
-#include <mach/kirkwood.h>
-#include <mach/bridge-regs.h>
 #include "common.h"
 #include "mpp.h"