[Feature][Modem]Update MTK MODEM V1.6 baseline version: MOLY.NR15.R3.MD700.IVT.MP1MR3.MP.V1.6

MTK modem version: MT2735_IVT_MOLY.NR15.R3.MD700.IVT.MP1MR3.MP.V1.6.tar.gz
RF  modem version: NA

Change-Id: I45a4c2752fa9d1a618beacd5d40737fb39ab64fb
diff --git a/mcu/tools/sw_binding_key.ini b/mcu/tools/sw_binding_key.ini
new file mode 100644
index 0000000..9b7859d
--- /dev/null
+++ b/mcu/tools/sw_binding_key.ini
@@ -0,0 +1 @@
+root_key      = "0x34333231, 0x38373635, 0x32313039, 0x00353433"