Camera: Add host_support to AIDL interfaces

This enables host unit tests with the interfaces.

Bug: 348319796
Test: build
Change-Id: I676aa02b23b53a8e5cb2bbd2be8008672eb733cc
diff --git a/camera/provider/aidl/Android.bp b/camera/provider/aidl/Android.bp
index 38a8936..c055caa 100644
--- a/camera/provider/aidl/Android.bp
+++ b/camera/provider/aidl/Android.bp
@@ -10,6 +10,7 @@
 
 aidl_interface {
     name: "android.hardware.camera.provider",
+    host_supported: true,
     vendor_available: true,
     srcs: [
         "android/hardware/camera/provider/*.aidl",