Enable static builds of libharfbuzz_ng

Test: m libharfbuzz_ng
Change-Id: I5cc1b6aee7fc5c67ce25bfc65c04817277277792
diff --git a/Android.bp b/Android.bp
index 93ce028..c6c82c0 100644
--- a/Android.bp
+++ b/Android.bp
@@ -51,7 +51,7 @@
 //############################################################
 //   build the harfbuzz shared library
 //
-cc_library_shared {
+cc_library {
     name: "libharfbuzz_ng",
     host_supported: true,
     arch: {