kexts: pci: create generic devices for all pci devices found during scan

kexts/drivers/bus/pci/pci.h

@@ -0,0 +1,16 @@
+#ifndef PCI_H_
+#define PCI_H_
+
+#include <stdint.h>
+#include <socks/status.h>
+
+typedef void (*pci_func_t)(uint32_t device, uint16_t vendor_id, uint16_t device_id, void *arg);
+
+extern struct driver *pci_driver;
+extern struct bus_device *pci_bus;
+
+extern struct pci_driver *find_driver_for_pci_device(unsigned int vendor_id, unsigned int device_id);
+extern kern_status_t init_pci_driver_cache(void);
+extern void pci_enumerate_devices(pci_func_t f, int type, void *arg);
+
+#endif