hal: Add support for dynamic logging

Changes to support dynamic logging in hal

Change-Id: I315c919bd940d8ccdb9103eb06bf67c1e3ff3f4b
diff --git a/hal/audio_extn/passthru.c b/hal/audio_extn/passthru.c
index dd4d4d4..24208ab 100644
--- a/hal/audio_extn/passthru.c
+++ b/hal/audio_extn/passthru.c
@@ -40,6 +40,11 @@
 #include <cutils/properties.h>
 
 #include "sound/compress_params.h"
+#ifdef DYNAMIC_LOG_ENABLED
+#include <log_xml_parser.h>
+#define LOG_MASK HAL_MOD_FILE_PASSTH
+#include <log_utils.h>
+#endif
 
 static const audio_format_t audio_passthru_formats[] = {
     AUDIO_FORMAT_AC3,