schemas: add Lattice LCMXO2-4000HC CPLD device

Add "LatticeLCMXO2_4000HCFirmware" to CPLD device types enum

Change-Id: Iad8276ce4f00498c404d480272c1ac5fedc51239
Signed-off-by: Cosmo Chou <cosmo.chou@quantatw.com>
diff --git a/schemas/cpld.json b/schemas/cpld.json
index 19965e1..bd9709a 100644
--- a/schemas/cpld.json
+++ b/schemas/cpld.json
@@ -22,6 +22,7 @@
                 "Type": {
                     "description": "Supported CPLD devices, <vendor name><chip name>Firmware",
                     "enum": [
+                        "LatticeLCMXO2_4000HCFirmware",
                         "LatticeLCMXO3D_4300Firmware",
                         "LatticeLCMXO3D_9400Firmware",
                         "LatticeLCMXO3LF_2100CFirmware",