sh: pci: Set the I/O port base to the SH7780 I/O window default.

Presently the I/O port base isn't being set anywhere, which allows things
like generic_inl() to blow up. Fix this up to point at the PCI IO window.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
diff --git a/arch/sh/drivers/pci/pci-sh7780.c b/arch/sh/drivers/pci/pci-sh7780.c
index fa73b0d..207b720 100644
--- a/arch/sh/drivers/pci/pci-sh7780.c
+++ b/arch/sh/drivers/pci/pci-sh7780.c
@@ -112,5 +112,7 @@
 	word = SH4_PCICR_PREFIX | SH4_PCICR_CFIN | SH4_PCICR_FTO;
 	pci_write_reg(chan, word, SH4_PCICR);
 
+	__set_io_port_base(SH7780_PCI_IO_BASE);
+
 	return 0;
 }