xtensa: use NO_SYSCALL instead of -1

For the sake of clarity define macro NO_SYSCALL and use it for
setting/checking struct pt_regs::syscall field.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2018-11-09 15:43:14 -08:00
commit 6a986984b6
4 changed files with 8 additions and 6 deletions