Report USB 2.0 Extension capability

Author: Disasm

src/descriptor.rs

@@ -235,7 +235,11 @@ impl<'w, 'a: 'w> BosWriter<'w, 'a> {
             &[
                 0x00, 0x00, // wTotalLength
                 0x00, // bNumDeviceCaps
-            ])
+            ])?;
+
+        self.capability(capability_type::USB_2_0_EXTENSION, &[0; 4])?;
+
+        Ok(())
     }
 
     /// Writes capability descriptor to a BOS