[libc-trusty] return void * from mmap.

Previously the syscall stubs were called directly, and the syscall stubs
always returned longs.

Bug: 110159511
Change-Id: I2018e73ce6ac80c64d202ba4e65a50353c0060a7
2 files changed
tree: 3555136e0fbc659bc2b93896efa1821b0adb2495
  1. include/
  2. interface/
  3. lib/