Fix poll options for NativeActivity's hasEvents

NativeActivity created a pipe to wake up a Looper it's attached to, but
it failed to set the right options for the read part of the pipe. This
affects only the NativeActivity API call for AInputQueue_hasEvents

Change-Id: I02e5dad4e700f4c724b3187a4b7e0df931dd1eed
1 file changed