wlan: Enter download mode upon unexpected WDI response message.

When unexpected response message is received at WDI layer,
trigger device into download mode. This enables gathering ramdump
and determine the source of invalid response message from WCNSS.
This is controlled by PANIC_ON_BUG flag in Kbuild.

Change-Id: I119cd863d58377b746cc0d1f2c85a68c5154d9b8
CRs-Fixed: 535683
diff --git a/CORE/WDI/CP/src/wlan_qct_wdi.c b/CORE/WDI/CP/src/wlan_qct_wdi.c
index 54c6d07..068d091 100644
--- a/CORE/WDI/CP/src/wlan_qct_wdi.c
+++ b/CORE/WDI/CP/src/wlan_qct_wdi.c
@@ -103,6 +103,7 @@
 #include "wlan_hal_msg.h"
 
 #include "pttMsgApi.h"
+#include "vos_trace.h"
 
 /*===========================================================================
    WLAN DAL Control Path Internal Data Definitions and Declarations
@@ -20748,6 +20749,7 @@
                WDI_getRespMsgString(pWDICtx->wdiExpectedResponse),
                pWDICtx->wdiExpectedResponse);
     /* WDI_DetectedDeviceError( pWDICtx, WDI_ERR_INVALID_RSP_FMT); */
+    VOS_BUG(0);
     return;
   }