sh: mach-sh03: Use __set_io_port_base(), kill off special ioport_map().

This also fixes up a long-standing bug for this platform where the PIO
base was set to a register offset, rather than the actual PIO offset
itself.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

arch/sh/drivers/pci/ops-sh03.c

@@ -18,7 +18,8 @@
  */
 int __init pcibios_init_platform(void)
 {
-   return 1;
+	__set_io_port_base(SH7751_PCI_IO_BASE);
+	return 1;
 }
 
 static struct resource sh7751_io_resource = {