emulation: qemu-sbsa: Enable PCI enumeration

Enable PCI enumeration by default to get the Bochs display driver up
and running before the boot medium is scanned.
This is just to enhance the user-experience while booting the machine.

TEST: U-Boot logo, version, log output and the U-Boot shell is visible
      on the display device.

Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
1 file changed