Import platform SDK from build 7488740

./update_prebuilts.py -p 7488740

Bug: 186478867
Test: presubmit
Merged-In: Ia375dbc509e66d097a24e02e0ce86f83c16dad37
Merged-In: I6f82934cdcf08d4db5b8b639386fded75bdb0e38
Change-Id: I7d1976422204332192e8bdc5c3a15998004b748a
89 files changed