can: ti_hecc: include linux/io.h

This fixes a build breakage for OMAP3 boards.
Signed-off-by: NDaniel Mack <zonque@gmail.com>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: netdev@vger.kernel.org
Acked-by: NWolfgang Grandegger <wg@grandegger.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/can/ti_hecc.c

@@ -46,6 +46,7 @@
 #include <linux/skbuff.h>
 #include <linux/platform_device.h>
 #include <linux/clk.h>
+#include <linux/io.h>
 
 #include <linux/can/dev.h>
 #include <linux/can/error.h>