riscv: add support for QEMU firmware tables

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

Enable the QFW MMIO interface if the QEMU firmware interface is enabled.

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-riscv/Kconfig b/board/emulation/qemu-riscv/Kconfig
index cdd0d0d..d5f302f 100644
--- a/board/emulation/qemu-riscv/Kconfig
+++ b/board/emulation/qemu-riscv/Kconfig
@@ -33,6 +33,8 @@
 	def_bool y
 	select GENERIC_RISCV
 	select SUPPORT_SPL
+	select QFW if ACPI
+	select QFW_MMIO if QFW
 	imply AHCI
 	imply SMP
 	imply BOARD_LATE_INIT