Move input library code to frameworks/native.

No longer compile libandroidfw as a static library on the device
since it already exists as a shared library.  Keeping the static
library would force us to provide a static library version of
libinput for the device as well which doesn't make sense.

Change-Id: I3517881b87b47dcc209d80dbd0ac6b5cf29a766f
diff --git a/native/android/Android.mk b/native/android/Android.mk
index 207cc4b..cda38e0 100644
--- a/native/android/Android.mk
+++ b/native/android/Android.mk
@@ -20,6 +20,7 @@
     liblog \
     libcutils \
     libandroidfw \
+    libinput \
     libutils \
     libbinder \
     libui \