pci: use __weak

Signed-off-by: Jeroen Hofstee <jeroen@myspectrum.nl>

drivers/pci/pci.c

@@ -572,7 +572,7 @@ const char * pci_class_str(u8 class)
 }
 #endif /* CONFIG_CMD_PCI || CONFIG_PCI_SCAN_SHOW */
 
-int __pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
+__weak int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
 {
 	/*
 	 * Check if pci device should be skipped in configuration
@@ -591,19 +591,15 @@ int __pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
 
 	return 0;
 }
-int pci_skip_dev(struct pci_controller *hose, pci_dev_t dev)
-	__attribute__((weak, alias("__pci_skip_dev")));
 
 #ifdef CONFIG_PCI_SCAN_SHOW
-int __pci_print_dev(struct pci_controller *hose, pci_dev_t dev)
+__weak int pci_print_dev(struct pci_controller *hose, pci_dev_t dev)
 {
 	if (dev == PCI_BDF(hose->first_busno, 0, 0))
 		return 0;
 
 	return 1;
 }
-int pci_print_dev(struct pci_controller *hose, pci_dev_t dev)
-	__attribute__((weak, alias("__pci_print_dev")));
 #endif /* CONFIG_PCI_SCAN_SHOW */
 
 int pci_hose_scan_bus(struct pci_controller *hose, int bus)