soundtrigger: add host_supported

  support host build for development.

Test: build pass
Bug: 206738138
Change-Id: I55d1b2bcdbf234efc9ca98aca00b9777327fe16c
diff --git a/soundtrigger/aidl/Android.bp b/soundtrigger/aidl/Android.bp
index fcccc27..28e8090 100644
--- a/soundtrigger/aidl/Android.bp
+++ b/soundtrigger/aidl/Android.bp
@@ -10,6 +10,7 @@
 aidl_interface {
     name: "android.hardware.soundtrigger3",
     vendor_available: true,
+    host_supported: true,
     flags: ["-Werror", "-Weverything", ],
     srcs: [
         "android/hardware/soundtrigger3/ISoundTriggerHw.aidl",