[Feature] add GA346 baseline version

Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/sound/isa/gus/interwave-stb.c b/src/kernel/linux/v4.19/sound/isa/gus/interwave-stb.c
new file mode 100644
index 0000000..dbe4f48
--- /dev/null
+++ b/src/kernel/linux/v4.19/sound/isa/gus/interwave-stb.c
@@ -0,0 +1,2 @@
+#define SNDRV_STB
+#include "interwave.c"