icside: devm_iounmap() needs linux/io.h

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>

drivers/ide/arm/icside.c

@@ -18,10 +18,10 @@
 #include <linux/device.h>
 #include <linux/init.h>
 #include <linux/scatterlist.h>
+#include <linux/io.h>
 
 #include <asm/dma.h>
 #include <asm/ecard.h>
-#include <asm/io.h>
 
 #define ICS_IDENT_OFFSET		0x2280