InputFlinger Split: Use libinputreader in InputManagerService

This changes native InputManagerService to use the new backend library
for inputflinger: libinputreader.

Bug: 119264687
Test: manual: Build, run, and test input (touch, mouse)
Change-Id: I619492d5492cd8444d7c2cc7af9717c19c938256
diff --git a/libs/input/Android.bp b/libs/input/Android.bp
index c5a6ec5..f1d9397 100644
--- a/libs/input/Android.bp
+++ b/libs/input/Android.bp
@@ -28,10 +28,13 @@
         "libgui",
         "libui",
         "libinput",
-        "libinputflinger",
         "libnativewindow",
     ],
 
+    header_libs: [
+        "libinputflinger_headers",
+    ],
+
     include_dirs: ["frameworks/native/services"],
 
     cflags: [