qcacmn: Export qdf_trace_hex_dump

Export qdf_trace_hex_dump to make it available in other module.

Change-Id: Ib59439d64ad31dc23e46caf068914dd0601aa248
CRs-fixed: 2058321

qdf/linux/src/qdf_trace.c

@@ -355,6 +355,7 @@ void qdf_trace_hex_dump(QDF_MODULE_ID module, QDF_TRACE_LEVEL level,
 		qdf_trace_msg(module, level, "%.8x: %s", i, linebuf);
 	}
 }
+EXPORT_SYMBOL(qdf_trace_hex_dump);
 
 #endif