set syscalls_todo to N, not N+1

I really do not see any use case to increment users choice.

Signed-off-by: Toralf Förster <toralf.foerster@gmx.de>
params: Add missing \n into usage output

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
add basic information for PA-RISC architecture
add more headers to fix compile on PA-RISC