sh: add reg_base member to pci_channel

Store the base address of the pci host controller registers in struct
pci_channel and use the address in pci_read_reg() and pci_write_reg().

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/drivers/pci/ops-sh4.c b/arch/sh/drivers/pci/ops-sh4.c
index ee62e6d..540683d 100644
--- a/arch/sh/drivers/pci/ops-sh4.c
+++ b/arch/sh/drivers/pci/ops-sh4.c
@@ -121,8 +121,8 @@
 		if (pci_read_reg(chan, SH4_PCIPAR) == P1SEG) {
 			pci_write_reg(chan, tmp, SH4_PCIPAR);
 			printk(KERN_INFO "PCI: Using configuration type 1\n");
-			request_region(PCI_REG(SH4_PCIPAR), 8, "PCI conf1");
-
+			request_region(chan->reg_base + SH4_PCIPAR, 8,
+				       "PCI conf1");
 			return 0;
 		}