ANDROID: binder: consolidate wakeup vendor hooks into one

There are few vendor hooks available for binder wakeup related
functionality. As they both essentially do the same thing, we can
consolidate them into one.

Bug: 200103201
Change-Id: I44b472e7564eecbe8236ad2eb88b0433195f14d8
Signed-off-by: Satya Durga Srinivasu Prabhala <satyap@codeaurora.org>
Signed-off-by: Ashay Jaiswal <ashayj@codeaurora.org>