Add jni_headers to libinput_evdev

Preparation for removing implicit include paths for jni.h from soong.

Bug: 152482542
Test: apply soong change and 'm checkbuild'
Change-Id: I0a021d293f53fdb78b37452b5aa873d809e6ca81
Merged-In: I0a021d293f53fdb78b37452b5aa873d809e6ca81
Exempt-From-Owner-Approval: build clean-up
(cherry picked from commit a49fa1c8a9bd71eeab4971b7572e6a81b233f162)
diff --git a/modules/input/evdev/Android.bp b/modules/input/evdev/Android.bp
index 26e711f..bcd563f 100644
--- a/modules/input/evdev/Android.bp
+++ b/modules/input/evdev/Android.bp
@@ -27,6 +27,7 @@
         "SwitchInputMapper.cpp",
     ],
 
+    header_libs: ["jni_headers"],
     shared_libs: [
         "libhardware_legacy",
         "liblog",