Ensure injected touches poke user activity

Sometimes, there is a need to simulate a touch event via an adb shell
command. This could be done with the following command, for example:

adb shell input tap 500 500

In this CL, we add a unit test to check that the user activity is
getting poked after an event is injected.

Bug: 281559590
Test: m inputflinger_tests && $ANDROID_HOST_OUT/nativetest64/inputflinger_tests/inputflinger_tests
Change-Id: I6ac049135dddd828870a926906f28ba4239d9400
diff --git a/services/inputflinger/reporter/Android.bp b/services/inputflinger/reporter/Android.bp
index 693ff06..b1e1aee 100644
--- a/services/inputflinger/reporter/Android.bp
+++ b/services/inputflinger/reporter/Android.bp
@@ -37,6 +37,7 @@
 cc_defaults {
     name: "libinputreporter_defaults",
     srcs: [":libinputreporter_sources"],
+    host_supported: true,
     shared_libs: [
         "liblog",
         "libutils",