hw/pci-host/Kconfig: Add missing dependency MV64361 -> I8259

hw/pci-host/Kconfig: Add missing dependency MV64361 -> I8259

Looking at the MV64341 model source, there is a dependency on the
8259 interrupt controller:

  523     case MV64340_PCI_1_INTERRUPT_ACKNOWLEDGE_VIRTUAL_REG:
  524         /* FIXME: Should this be sent via the PCI bus somehow? */
  525         if (s->gpp_int_level && (s->gpp_value & BIT(31))) {
  526             ret = pic_read_irq(isa_pic);
  527         }
  528         break;

Add it to Kconfig to avoid the following build failure:

  /usr/bin/ld: libcommon.fa.p/hw_pci-host_mv64361.c.o: in function `mv64361_read':
  hw/pci-host/mv64361.c:526: undefined reference to `isa_pic'
  /usr/bin/ld: hw/pci-host/mv64361.c:526: undefined reference to `pic_read_irq'

Fixes: dcdf98a9015 ("hw/pci-host: Add emulation of Marvell MV64361 PPC system controller")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Message-Id: <20210515173716.358295-10-philmd@redhat.com>