[Binary] Remove OffloadBinary from the Objects enumeration

Summary:
We use the beginning and end of this enumeration to determine what is
and isn't an object format. The enumeration for the OffloadBinary was
put here by mistake which led to it being mistakenly classified as an
Object file.

llvm/include/llvm/Object/Binary.h

@@ -50,6 +50,8 @@ protected:
 
     ID_WinRes, // Windows resource (.res) file.
 
+    ID_Offload, // Offloading binary file.
+
     // Object and children.
     ID_StartObjects,
     ID_COFF,
@@ -69,8 +71,6 @@ protected:
 
     ID_Wasm,
 
-    ID_Offload, // Offloading binary file.
-
     ID_EndObjects
   };