configs: Update HIDL version and Enable multi-stage SVA flag.

-Sound trigger HIDL interface supports loading of more
than 1MB sound models from 2.1 version. Update to use HIDL
version 2.1.
-Set the audio feature flag to enable multi-stage SVA.

Change-Id: I44cbde4625d2fa94f9f0d88a4c3d3e8ceece5e05
diff --git a/configs/msm8937/msm8937.mk b/configs/msm8937/msm8937.mk
index 385d862..2eac9b8 100644
--- a/configs/msm8937/msm8937.mk
+++ b/configs/msm8937/msm8937.mk
@@ -57,6 +57,7 @@
 BOARD_SUPPORTS_QAHW := false
 AUDIO_FEATURE_ENABLED_DYNAMIC_LOG := true
 AUDIO_FEATURE_ENABLED_SND_MONITOR := true
+AUDIO_FEATURE_ENABLED_SVA_MULTI_STAGE := true
 ifeq ($(TARGET_KERNEL_VERSION), 3.18)
     AUDIO_FEATURE_ENABLED_DLKM := false
 else
@@ -240,7 +241,7 @@
     android.hardware.audio@2.0-service \
     android.hardware.audio@2.0-impl \
     android.hardware.audio.effect@2.0-impl \
-    android.hardware.soundtrigger@2.0-impl \
+    android.hardware.soundtrigger@2.1-impl \
     android.hardware.audio@4.0 \
     android.hardware.audio.common@4.0 \
     android.hardware.audio.common@4.0-util \