Fix mac build.

Add an inline for mmap64 to use on mac.

Bug: 155662887
Bug: 156053599

Test: Builds.
Change-Id: Id02e2c2f40acea2bdef604e9b80b70a85a941927
(cherry picked from commit 8a6dff22dc0cdc9b904072fa9ed2962b1cddb9fa)
1 file changed