qcacmn: Add Scheduler Watchdog Timer

In order to catch long running scheduler messages, start a watchdog
timer before processing each message, and stop the timer after each
message is processed. When the watchdog timer expires, immediately
crash the device in debug builds for easier debugging.

Change-Id: I4b43a9e12fc1f5b8a795fec790fe7548a100d9db
CRs-Fixed: 2037094

qdf/inc/qdf_trace.h

@@ -731,4 +731,15 @@ void qdf_logging_init(void);
  */
 void qdf_logging_exit(void);
 
+#define QDF_SYMBOL_LEN __QDF_SYMBOL_LEN
+
+/**
+ * qdf_sprint_symbol() - prints the name of a symbol into a string buffer
+ * @buffer: the string buffer to print into
+ * @addr: address of the symbol to lookup and print
+ *
+ * Return: number of characters printed
+ */
+int qdf_sprint_symbol(char *buffer, void *addr);
+
 #endif /* __QDF_TRACE_H */