wlan: Invoke panic if SSR never completed

Driver unload should not spin forever, if SSR was never completed invoke
panic after retrying for 30 seconds. Also invoke panic on SSR re-init
failure; invoking panic will help to collect more information on the
SSR failure.

Change-Id: Iaccceae20bd9e9321a9e6b4e13f37d759064d294
CRs-Fixed: 505738
diff --git a/Kbuild b/Kbuild
index 84735b7..f96c63e 100644
--- a/Kbuild
+++ b/Kbuild
@@ -51,7 +51,7 @@
 BUILD_DIAG_VERSION := 0
 
 #Do we panic on bug?  default is to warn
-PANIC_ON_BUG := 0
+PANIC_ON_BUG := 1
 
 #Re-enable wifi on WDI timeout
 RE_ENABLE_WIFI_ON_WDI_TIMEOUT := 0