arm: enable support for QEMU firmware tables

Enable the QEMU firmware interface if ACPI tables are to be supported on
the QEMU platform.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/board/emulation/qemu-arm/Kconfig b/board/emulation/qemu-arm/Kconfig
index ac2d078..e21c135 100644
--- a/board/emulation/qemu-arm/Kconfig
+++ b/board/emulation/qemu-arm/Kconfig
@@ -5,6 +5,7 @@
 
 config BOARD_SPECIFIC_OPTIONS # dummy
 	def_bool y
+	select QFW if ACPI
 	select QFW_MMIO if CMD_QFW
 	imply VIRTIO_MMIO
 	imply VIRTIO_PCI