sh: pci io port base address code

Adds a __get_pci_io_base() function which is used to match a port range
against struct pci_channel. This allows us to detect if a port range is
assigned to pci or happens to be legacy port io. While at it, remove unused
cpu-specific cruft.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/kernel/io.c

@@ -12,6 +12,7 @@
  * for more details.
  */
 #include <linux/module.h>
+#include <linux/pci.h>
 #include <asm/machvec.h>
 #include <asm/io.h>
 
@@ -69,6 +70,10 @@ void __iomem *ioport_map(unsigned long port, unsigned int nr)
 	if (ret)
 		return ret;
 
+	ret = __get_pci_io_base(port, nr);
+	if (ret)
+		return ret;
+
 	return __ioport_map(port, nr);
 }
 EXPORT_SYMBOL(ioport_map);