x86: remove unneeded check in mmconf reject

mmconfig is only used to access extended configuration space.

so don't need to reject MFG that only have one entry and only handle bus0.
Signed-off-by: NYinghai Lu <yinghai.lu@sun.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/pci/mmconfig-shared.c

@@ -316,18 +316,6 @@ static void __init pci_mmcfg_reject_broken(int type, int early)
 
 	cfg = &pci_mmcfg_config[0];
 
-	/*
-	 * Handle more broken MCFG tables on Asus etc.
-	 * They only contain a single entry for bus 0-0.
-	 */
-	if (pci_mmcfg_config_num == 1 &&
-	    cfg->pci_segment == 0 &&
-	    (cfg->start_bus_number | cfg->end_bus_number) == 0) {
-		printk(KERN_ERR "PCI: start and end of bus number is 0. "
-		       "Rejected as broken MCFG.\n");
-		goto reject;
-	}
-
 	for (i = 0; i < pci_mmcfg_config_num; i++) {
 		int valid = 0;
 		u32 size = (cfg->end_bus_number + 1) << 20;