x86: baytrail: Enable ACPI table generation for all boards

Enable ACPI table generation by creating a DSDT table for all baytrail
boards: conga-qeval20-qa3-e3845, bayleybay and minnowmax.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Tested-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/board/congatec/conga-qeval20-qa3-e3845/dsdt.asl b/board/congatec/conga-qeval20-qa3-e3845/dsdt.asl
new file mode 100644
index 0000000..6042011
--- /dev/null
+++ b/board/congatec/conga-qeval20-qa3-e3845/dsdt.asl
@@ -0,0 +1,14 @@
+/*
+ * Copyright (C) 2016, Bin Meng <bmeng.cn@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+DefinitionBlock("dsdt.aml", "DSDT", 2, "U-BOOT", "U-BOOTBL", 0x00010000)
+{
+	/* platform specific */
+	#include <asm/arch/acpi/platform.asl>
+
+	/* board specific */
+	#include "acpi/mainboard.asl"
+}