APBUART: debug bit was cleared incorrectly
AMBAPP find_by_idx: incorrect use of pointers fixed
PCILIB: make sure interrupt pin is rerouted for bus0 also
LIBPCI: first device (dev0=AD16) must also be probed
LEON PCI: host bridge driver support for probing dev0=AD16

Before the LIBPCI didn't probe device0 (AD16), the host bridge
drivers used bus=dev=func=0 to internally probe the host bridge's
target interface. Now that LIBPCI uses bus=dev=func=0 to access
device0, bus=0xff is introduced internally to identify the
host bridge target configuration space.