[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/arch/mips/xilfpga/Kconfig b/src/kernel/linux/v4.14/arch/mips/xilfpga/Kconfig
new file mode 100644
index 0000000..ca7b236
--- /dev/null
+++ b/src/kernel/linux/v4.14/arch/mips/xilfpga/Kconfig
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+choice
+	prompt "Machine type"
+	depends on MACH_XILFPGA
+	default XILFPGA_NEXYS4DDR
+
+config XILFPGA_NEXYS4DDR
+	bool "Nexys4DDR by Digilent"
+
+endchoice