Add Kodiak3 DC variant model

Summary: per title

Reviewed By: xanabani

Differential Revision: D71160296

fbshipit-source-id: 313b122d0dc97434b818c0aecdea31f623fda034

Author: Harshal Shah

fboss/lib/platforms/PlatformProductInfo.cpp

@@ -170,7 +170,8 @@ void PlatformProductInfo::initMode() {
     } else if (
         modelName.find("MORGAN800CC") == 0 ||
         modelName.find("8501-SYS-MT") == 0 ||
-        modelName.find("8501-SYS-MT-PVT") == 0) {
+        modelName.find("8501-SYS-MT-PVT") == 0 ||
+        modelName.find("8501-SYS-MT-DC") == 0) {
       type_ = PlatformType::PLATFORM_MORGAN800CC;
     } else if (modelName.find("YANGRA") == 0) {
       type_ = PlatformType::PLATFORM_YANGRA;