Staging: android: binder: Add some missing binder_stat_br calls

Cached thread return errors, death notifications and new looper
requests were not included in the stats.

Signed-off-by: Arve Hjønnevåg <arve@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: stratosk <stratosk@semaphore.gr>