Added host_supported: true to libharfbuzz_subset

This is needed for compiling tests for a library using libharfbuzz_subset

Bug: 295110683
Test: pre-submit only.
Change-Id: I891c41f90c70ab1cc5e18d04f1889ef2a081f15b
diff --git a/Android.bp b/Android.bp
index 755b5da..51aff4c 100644
--- a/Android.bp
+++ b/Android.bp
@@ -102,6 +102,9 @@
 
 cc_library {
     name: "libharfbuzz_subset",
+
+    host_supported: true,
+
     srcs: [
         "src/hb-number.cc",
         "src/hb-ot-cff1-table.cc",