ARM: imx: remove unnecessary inclusion from device-imx*.h

There is no need for device-imx*.h to include <soc>.h.  Remove them
and fix one indirect inclusion in mach-mx31ads.c.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/mach-imx/mach-mx31ads.c

@@ -29,6 +29,7 @@
 #include <asm/memory.h>
 #include <asm/mach/map.h>
 #include <mach/common.h>
+#include <mach/hardware.h>
 
 #ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
 #include <linux/mfd/wm8350/audio.h>