[PATCH v2] hw/hppa/Kconfig: Fix building with "configure --without-default-devices"

[Thomas Huth <thuth@redhat.com>]

When running "configure" with "--without-default-devices", building
of qemu-system-hppa currently fails with:

 /usr/bin/ld: libqemu-hppa-softmmu.fa.p/hw_hppa_machine.c.o: in function `machine_HP_common_init_tail':
 hw/hppa/machine.c:399: undefined reference to `usb_bus_find'
 /usr/bin/ld: hw/hppa/machine.c:399: undefined reference to `usb_create_simple'
 /usr/bin/ld: hw/hppa/machine.c:400: undefined reference to `usb_bus_find'
 /usr/bin/ld: hw/hppa/machine.c:400: undefined reference to `usb_create_simple'
 collect2: error: ld returned 1 exit status
 ninja: build stopped: subcommand failed.
 make: *** [Makefile:162: run-ninja] Error 1

And after fixing this, the qemu-system-hppa binary refuses to run
due to the missing 'pci-ohci' and 'pci-serial' devices. Let's add
the right config switches to fix these problems.

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 v2: Keep "select SERIAL" instead of replacing it

 hw/hppa/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/hw/hppa/Kconfig b/hw/hppa/Kconfig
index ff8528aaa8..dff5df7f72 100644
--- a/hw/hppa/Kconfig
+++ b/hw/hppa/Kconfig
@@ -7,6 +7,7 @@ config HPPA_B160L
     select DINO
     select LASI
     select SERIAL
+    select SERIAL_PCI
     select ISA_BUS
     select I8259
     select IDE_CMD646
@@ -16,3 +17,4 @@ config HPPA_B160L
     select LASIPS2
     select PARALLEL
     select ARTIST
+    select USB_OHCI_PCI
-- 
2.43.0