- Instead of using a syscall slot (370) just to get a function prototype
for lkmressys(), add an explicit function prototype to <sys/sysent.h>.
This also removes unused special case checks for 'lkmressys' from
makesyscalls.sh.
- Instead of having magic logic in makesyscalls.sh to only generate a
function prototype the first time 'lkmnosys' is seen, make 'NODEF'
always not generate a function prototype and include an explicit
prototype for 'lkmnosys' in <sys/sysent.h>.
- As a result of the fix in (2), update the LKM syscall entries in
the freebsd32 syscall table to use 'lkmnosys' rather than 'nosys'.
- Use NOPROTO for the __syscall() entry (198) in the native ABI. This
avoids the need for magic logic in makesyscalls.h to only generate
a function prototype the first time 'nosys' is encountered.
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