a) registers.h is really needed there
b) include of asm-generic/termios should be under __KERNEL__
c) includes of asm-generic/{memory_model,page} should be under
__KERNEL (nothing in there that would work in userland)
d) a lot of stuff in ptrace.h should be under __KERNEL__.

Signed-off-by: Al Viro
Acked-by: David Howells
Signed-off-by: Linus Torvalds