[cru] Serial hack for pre-prod cards

Author: kostorr

src/Cru/CruBar.cxx

@@ -290,7 +290,11 @@ boost::optional<int32_t> CruBar::getSerialNumber()
                  << char((serial & 0xff000000) >> 24);
 
     try {
-      return std::stoi(serialString.str());
+      if (serialString.str().find("-") != std::string::npos) { // hack for pre production CRUs
+        return 0;
+      } else {
+        return std::stoi(serialString.str());
+      }
     } catch (...) {
       return {};
     }

src/FirmwareChecker.cxx

@@ -22,6 +22,7 @@ namespace roc
 {
 
 FirmwareChecker::FirmwareChecker() : mCompatibleFirmwareList({ /* CRU */
+                                                               { "f8cecade", "v3.7.0" },
                                                                { "75b96268", "v3.6.1" },
                                                                { "6955404", "v3.6.0" },
                                                                { "d458317e", "v3.5.2" },