sh: add io_base member to pci_channel

Store the io window base address in struct pci_channel and use that one
instead of SH77xx_PCI_IO_BASE.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/include/asm/pci.h b/arch/sh/include/asm/pci.h
index 8e9e0ed..84d12eb 100644
--- a/arch/sh/include/asm/pci.h
+++ b/arch/sh/include/asm/pci.h
@@ -25,6 +25,7 @@
 	int last_devfn;
 	int enabled;
 	unsigned long reg_base;
+	unsigned long io_base;
 };
 
 /*