[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/drivers/misc/echo/Kconfig b/src/kernel/linux/v4.14/drivers/misc/echo/Kconfig
new file mode 100644
index 0000000..f1d41ea
--- /dev/null
+++ b/src/kernel/linux/v4.14/drivers/misc/echo/Kconfig
@@ -0,0 +1,9 @@
+config ECHO
+	tristate "Line Echo Canceller support"
+	default n
+	---help---
+	  This driver provides line echo cancelling support for mISDN and
+	  Zaptel drivers.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called echo.