configs: ST HAL upgrade for P compatibility

-Sound trigger HIDL interface supports loading of more
than 1MB sound models from 2.1 version. Update to use HIDL
version 2.1.

Change-Id: I564f598f41f20a01ba9e8dd69be125097a134f1c
diff --git a/configs/msm8909/msm8909.mk b/configs/msm8909/msm8909.mk
index bc475c6..1272977 100644
--- a/configs/msm8909/msm8909.mk
+++ b/configs/msm8909/msm8909.mk
@@ -168,7 +168,7 @@
     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 \