sbsa-ref: use Bochs graphics card instead of VGA

Bochs card is normal PCI Express card so it fits better in system with
PCI Express bus. VGA is simple legacy PCI card.

Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Reviewed-by: Leif Lindholm <quic_llindhol@quicinc.com>
Message-id: 20230505120936.1097060-1-marcin.juszkiewicz@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/arm/sbsa-ref.c

@@ -648,7 +648,7 @@ static void create_pcie(SBSAMachineState *sms)
         }
     }
 
-    pci_create_simple(pci->bus, -1, "VGA");
+    pci_create_simple(pci->bus, -1, "bochs-display");
 
     create_smmu(sms, pci->bus);
 }