ppc/pegasos2: Fix reset state of USB functions

The original non-free board firmware sets the command register of the
USB functions to 7 and some guests rely on this for working USB. Match
what the board firmware does when using VOF instead.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Message-ID: <06a2b864431425f23d1f2b5abf0c027819ac11c6.1689725688.git.balaton@eik.bme.hu>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>

hw/ppc/pegasos2.c

@@ -324,9 +324,13 @@ static void pegasos2_machine_reset(MachineState *machine, ShutdownCause reason)
 
     pegasos2_pci_config_write(pm, 1, (PCI_DEVFN(12, 2) << 8) |
                               PCI_INTERRUPT_LINE, 2, 0x409);
+    pegasos2_pci_config_write(pm, 1, (PCI_DEVFN(12, 2) << 8) |
+                              PCI_COMMAND, 2, 0x7);
 
     pegasos2_pci_config_write(pm, 1, (PCI_DEVFN(12, 3) << 8) |
                               PCI_INTERRUPT_LINE, 2, 0x409);
+    pegasos2_pci_config_write(pm, 1, (PCI_DEVFN(12, 3) << 8) |
+                              PCI_COMMAND, 2, 0x7);
 
     pegasos2_pci_config_write(pm, 1, (PCI_DEVFN(12, 4) << 8) |
                               PCI_INTERRUPT_LINE, 2, 0x9);