ARM: imx: move platform device code into mach-imx

It moves platform device code from plat-mxc into mach-imx.  Along with
that, header devices-common.h gets moved from plat-mxc/include/mach/
into mach-imx/devices/.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
diff --git a/arch/arm/mach-imx/Makefile b/arch/arm/mach-imx/Makefile
index 5025a9d..257893e 100644
--- a/arch/arm/mach-imx/Makefile
+++ b/arch/arm/mach-imx/Makefile
@@ -92,3 +92,5 @@
 
 obj-$(CONFIG_MACH_IMX51_DT) += imx51-dt.o
 obj-$(CONFIG_SOC_IMX53) += mach-imx53.o
+
+obj-y += devices/