x86: Add DFI BT700 BayTrail board support

This patch adds support for the DFI BayTrail BT700 QSeven SoM installed
on the DFI Q7X-151 baseboard. The baseboard is equipped with the Nuvoton
NCT6102D Super IO chip providing the UART as console.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
diff --git a/board/dfi/dfi-bt700/Kconfig b/board/dfi/dfi-bt700/Kconfig
new file mode 100644
index 0000000..3f0acb3
--- /dev/null
+++ b/board/dfi/dfi-bt700/Kconfig
@@ -0,0 +1,28 @@
+if TARGET_DFI_BT700
+
+config SYS_BOARD
+	default "dfi-bt700"
+
+config SYS_VENDOR
+	default "dfi"
+
+config SYS_SOC
+	default "baytrail"
+
+config SYS_CONFIG_NAME
+	default "dfi-bt700"
+
+config SYS_TEXT_BASE
+	default 0xfff00000 if !EFI_STUB
+	default 0x01110000 if EFI_STUB
+
+config BOARD_SPECIFIC_OPTIONS # dummy
+	def_bool y
+	select X86_RESET_VECTOR if !EFI_STUB
+	select INTEL_BAYTRAIL
+	select BOARD_ROMSIZE_KB_8192
+
+config PCIE_ECAM_BASE
+	default 0xe0000000
+
+endif