x86: Allow any arch to generate ACPI tables

These have sadly found their way to ARM now. Allow any arch to support
generating ACPI tables.

Disable this for the tools build.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/lib/Kconfig b/lib/Kconfig
index 38051cc..7f6a754 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -202,6 +202,24 @@
 
 endchoice
 
+config SUPPORT_ACPI
+	bool
+	help
+	  Enable this if your arch or board can support generating ACPI
+	  (Advanced Configuration and Power Interface) tables. In this case
+	  U-Boot can generate these tables and pass them to the Operating
+	  System.
+
+config GENERATE_ACPI_TABLE
+	bool "Generate an ACPI (Advanced Configuration and Power Interface) table"
+	depends on SUPPORT_ACPI
+	select QFW if QEMU
+	help
+	  The Advanced Configuration and Power Interface (ACPI) specification
+	  provides an open standard for device configuration and management
+	  by the operating system. It defines platform-independent interfaces
+	  for configuration and power management monitoring.
+
 config SPL_TINY_MEMSET
 	bool "Use a very small memset() in SPL"
 	help