dde_kit: enable pci lookup by device_class

Instead of trying all PCI devices by a specific PCI driver, now the device or
the device class can be limited to the one actually supported by the specific
driver.
dde_kit: support to allocate DMA buffer per device
dde_ipxe: alloc DMA memory via dde_kit
lwip: adjust run script to run with new pci_drv