hal: support calibration for hfp with dual asm loopback

Add support TX and RX calibration for HFP call
on both uplink and downlink ASM loopback path.

Change-Id: I66dec9ec01e0645ba6f5c21a4e64aabd10e2b6a5
Signed-off-by: Derek Chen <chenche@codeaurora.org>
Signed-off-by: Guodong Hu <guodhu@codeaurora.org>
diff --git a/hal/audio_hw.h b/hal/audio_hw.h
index b1e61ad..5e9627b 100644
--- a/hal/audio_hw.h
+++ b/hal/audio_hw.h
@@ -159,6 +159,8 @@
     /* HFP Use case*/
     USECASE_AUDIO_HFP_SCO,
     USECASE_AUDIO_HFP_SCO_WB,
+    USECASE_AUDIO_HFP_SCO_DOWNLINK,
+    USECASE_AUDIO_HFP_SCO_WB_DOWNLINK,
 
     /* Capture usecases */
     USECASE_AUDIO_RECORD,