[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/arch/mips/txx9/rbtx4927/setup.c b/arch/mips/txx9/rbtx4927/setup.c
index 3da20ea..88c05cc 100644
--- a/arch/mips/txx9/rbtx4927/setup.c
+++ b/arch/mips/txx9/rbtx4927/setup.c
@@ -238,6 +238,7 @@
 	txx9_alloc_pci_controller(&txx9_primary_pcic,
 				  RBTX4927_PCIMEM, RBTX4927_PCIMEM_SIZE,
 				  RBTX4927_PCIIO, RBTX4927_PCIIO_SIZE);
+	txx9_board_pcibios_setup = tx4927_pcibios_setup;
 #else
 	set_io_port_base(KSEG1 + RBTX4927_ISA_IO_OFFSET);
 #endif