Enable clang-format for frameworks/base

Copy and paste internal setup to AOSP. Not include folders not in AOSP
yet.

Bug: None
Test: repo upload
Change-Id: I08b8c6d1bae7d1954847c207ef8e6d80373b2d05
Merged-In: I08b8c6d1bae7d1954847c207ef8e6d80373b2d05