Commits
Max Filippov committed 9f24f3c1067
xtensa: implement tracehook functions and enable HAVE_ARCH_TRACEHOOK
Implement syscall_get_nr, syscall_rollback, syscall_get_error,
syscall_{get,set}_return_value and syscall_{get,set}_arguments.
Select HAVE_ARCH_TRACEHOOK as Xtensa now has all support for that.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>