[MIPS] TXx9: Add some pci options

Add pci options for backplane type, clock selection, error handling,
timeout values.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/txx9/tx4927pcic.h b/include/asm-mips/txx9/tx4927pcic.h
index d61c3d0..e1d78e9 100644
--- a/include/asm-mips/txx9/tx4927pcic.h
+++ b/include/asm-mips/txx9/tx4927pcic.h
@@ -195,5 +195,6 @@
 void __init tx4927_pcic_setup(struct tx4927_pcic_reg __iomem *pcicptr,
 			      struct pci_controller *channel, int extarb);
 void tx4927_report_pcic_status(void);
+char *tx4927_pcibios_setup(char *str);
 
 #endif /* __ASM_TXX9_TX4927PCIC_H */