usb-dbg: Update to determine when the BIOS should be displayed

Update to enable BIOS version display for non-multi-host platforms.

Change-Id: Ice9c3776ebaa69927871ae2daff96eb6898b0627
Signed-off-by: Daniel Hsu <Daniel-Hsu@quantatw.com>
diff --git a/src/usb-dbg.cpp b/src/usb-dbg.cpp
index ed15e4e..4e2847d 100644
--- a/src/usb-dbg.cpp
+++ b/src/usb-dbg.cpp
@@ -704,7 +704,7 @@
             }
         }
 
-        if (hostPosition != BMC_POSITION)
+        if (hostPosition != BMC_POSITION || hostInstances == "0")
         {
             // BIOS ver
             std::string biosVer;