[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/kernel/linux/v4.14/sound/isa/sb/sbawe.c b/src/kernel/linux/v4.14/sound/isa/sb/sbawe.c
new file mode 100644
index 0000000..2ec52a3
--- /dev/null
+++ b/src/kernel/linux/v4.14/sound/isa/sb/sbawe.c
@@ -0,0 +1,2 @@
+#define SNDRV_SBAWE
+#include "sb16.c"