vga: improve VGA logic

Improve VGA selection logic, push check for device availabilty to vl.c.
Create the devices at board level unconditionally.

Remove now unused pci_try_create*() functions.

Make PCI VGA devices optional.

Reviewed-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/hw/qdev.c b/hw/qdev.c
index e59f345..5a75668 100644
--- a/hw/qdev.c
+++ b/hw/qdev.c
@@ -80,6 +80,10 @@ static DeviceInfo *qdev_find_info(BusInfo *bus_info, const char *name)
     return NULL;
 }
 
+bool qdev_exists(const char *name)
+{
+    return !!qdev_find_info(NULL, name);
+}
 static void qdev_property_add_legacy(DeviceState *dev, Property *prop,
                                      Error **errp);