Disable MPC5200 bus pipelining as workaround for bus contention

cpu/mpc5xxx/pci_mpc5200.c

@@ -129,8 +129,10 @@ void pci_mpc5xxx_init (struct pci_controller *hose)
 	*(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~((7 << 8) | (3 << 5));
 	*(vu_long *)(MPC5XXX_XLBARB + 0x40) |= (3 << 8) | (3 << 5);
 
+#if 0
 	/* Enable piplining */
 	*(vu_long *)(MPC5XXX_XLBARB + 0x40) &= ~(1 << 31);
+#endif
 	
 	/* Disable interrupts from PCI controller */
 	*(vu_long *)MPC5XXX_PCI_GSCR &= ~(7 << 12);