[ACPI] PNPACPI IRQ workaround for HP workstations

Move pcibios_penalize_isa_irq() to pnpacpi_parse_allocated_irqresource().
Previously we passed the GSI, not the IRQ, and we did it even if parsing
the IRQ resource failed.

Parse IRQ descriptors that contain multiple interrupts.  This violates the
spec (in _CRS, only one interrupt per descriptor is allowed), but some
firmware, e.g., HP rx7620 and rx8620 descriptions of HPET, has this bug.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>