[syscalls][libc-trusty] Update exit_group and exit

The exit_group has been renamed to exit_etc and now takes an int32 status
parameter and an uint32 flags parameter. Updated the exit implementation that
already accepted a parameter to pass it in the exit_etc call. The flags
parameter is not used yet.

Change-Id: Ia6d12546625d4f71e07437ca9fd7007e009d0335
3 files changed
tree: bbc693e448511ca1b9ea4a70c4e11c0bddcc4a9d
  1. include/
  2. interface/
  3. lib/