hal: support compressed capture with variable size packets

Compressed IEC 61937 capture uses variable size packets for data
transfer

Change-Id: I8e6baaf870f5f504c0c642cf44795334097bddbf
diff --git a/hal/audio_extn/utils.c b/hal/audio_extn/utils.c
old mode 100755
new mode 100644
index 8a585df..6aab347
--- a/hal/audio_extn/utils.c
+++ b/hal/audio_extn/utils.c
@@ -140,6 +140,7 @@
     STRING_TO_ENUM(AUDIO_INPUT_FLAG_SYNC),
     STRING_TO_ENUM(AUDIO_INPUT_FLAG_TIMESTAMP),
     STRING_TO_ENUM(AUDIO_INPUT_FLAG_COMPRESS),
+    STRING_TO_ENUM(AUDIO_INPUT_FLAG_PASSTHROUGH),
 };
 
 const struct string_to_enum s_format_name_to_enum_table[] = {