ARM: imx: export imx_ioremap

The arch_ioremap function on i.MX is now an indirect function pointer.
In order to use it from any loadable module, the pointer itself
has to be exported.

ERROR: "imx_ioremap" [drivers/video/tmiofb.ko] undefined!
ERROR: "imx_ioremap" [drivers/usb/host/sl811-hcd.ko] undefined!
ERROR: "imx_ioremap" [drivers/usb/host/r8a66597-hcd.ko] undefined!
ERROR: "imx_ioremap" [drivers/usb/host/oxu210hp-hcd.ko] undefined!
ERROR: "imx_ioremap" [drivers/usb/gadget/r8a66597-udc.ko] undefined!

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

arch/arm/plat-mxc/system.c

@@ -21,6 +21,7 @@
 #include <linux/io.h>
 #include <linux/err.h>
 #include <linux/delay.h>
+#include <linux/module.h>
 
 #include <mach/hardware.h>
 #include <mach/common.h>
@@ -30,6 +31,7 @@
 
 void (*imx_idle)(void) = NULL;
 void __iomem *(*imx_ioremap)(unsigned long, size_t, unsigned int) = NULL;
+EXPORT_SYMBOL_GPL(imx_ioremap);
 
 static void __iomem *wdog_base;