[Feature]add MT2731_MP2_MR2_SVN388 baseline version

Change-Id: Ief04314834b31e27effab435d3ca8ba33b499059
diff --git a/src/lynq/lib/liblynq-protcl/http/cert/serial.old b/src/lynq/lib/liblynq-protcl/http/cert/serial.old
new file mode 100644
index 0000000..9e22bcb
--- /dev/null
+++ b/src/lynq/lib/liblynq-protcl/http/cert/serial.old
@@ -0,0 +1 @@
+02